Notes
Catriona Agg's puzzles

Catriona Agg’s Geometry Puzzles

  1. three squares ii May 2, 2021

    Three Squares II

  2. two overlapping triangles ii Apr 11, 2021

    Two Overlapping Triangles II

  3. two regular hexagons ii Apr 10, 2021

    Two Regular Hexagons II

  4. isosceles and equilateral triangles Apr 10, 2021

    Isosceles and Equilateral Triangles

  5. two concentric circles Apr 10, 2021

    Two Concentric Circles

  6. four squares and a quarter circle Apr 9, 2021

    Four Squares and a Quarter Circle

  7. hexagon and a square Apr 6, 2021

    Hexagon and a Square

  8. two quarter circles in a square ii Apr 5, 2021

    Two Quarter Circles in a Square II

  9. four squares in a semi-circle Apr 4, 2021

    Four Squares in a Semi-Circle

  10. triangle in two tilted squares Apr 3, 2021

    Triangle in Two Tilted Squares

  11. quarter circle overlapping a circle Apr 2, 2021

    Quarter Circle Overlapping a Circle

  12. five equilateral triangles Apr 1, 2021

    Five Equilateral Triangles

  13. four equilateral triangles inside a hexagon Mar 31, 2021

    Four Equilateral Triangles Inside a Hexagon

  14. two quarter circles in a semi-circle ii Mar 30, 2021

    Two Quarter Circles in a Semi-Circle II

  15. three squares iii Mar 29, 2021

    Three Squares III

  16. four squares vii Mar 28, 2021

    Four Squares VII

  17. seven quarter circles inside a semi-circle Mar 27, 2021

    Seven Quarter Circles Inside a Semi-Circle

  18. two hexagons and a triangle Mar 26, 2021

    Two Hexagons and a Triangle

  19. two squares inside a semi-circle Mar 23, 2021

    Two Squares Inside a Semi-Circle

  20. five semi-circles Mar 22, 2021

    Five Semi-Circles

  21. four squares vi Mar 21, 2021

    Four Squares VI

  22. four parallel semi-circles Mar 20, 2021

    Four Parallel Semi-Circles

  23. three overlapping hexagons Mar 19, 2021

    Three Overlapping Hexagons

  24. four squares v Mar 18, 2021

    Four Squares V

  25. two squares on a hexagon Mar 17, 2021

    Two Squares on a Hexagon

  26. semi-circles in a rectangle Mar 16, 2021

    SemiCirclesinaRectangle_small.png

  27. three triangles in a hexagon Mar 15, 2021

    Three Triangles in a Hexagon

  28. striped semi-circle Mar 14, 2021

    Striped Semi-Circle

  29. two quarter circles and a semi-circle ii Mar 13, 2021

    Two Quarter Circles and a Semi-Circle II

  30. five quarter circles Mar 12, 2021

    Five Quarter Circles

  31. subdivided hexagon Mar 10, 2021

    Subdivided Hexagon

  32. multiple semi-circles iii Mar 7, 2021

    Multiple Semi-Circles III

  33. three overlapping semi-circles Mar 6, 2021

    Three Overlapping Semi-Circles

  34. three quarter circles Mar 2, 2021

    Three Quarter Circles

  35. two squares on a diameter of a circle Mar 1, 2021

    Two Squares on a Diameter of a Circle

  36. a hexagon and a nonagon Feb 28, 2021

    A Hexagon and a Nonagon

  37. four quarter circles in a circle Feb 27, 2021

    Four Quarter Circles in a Circle

  38. three regular hexagons Feb 26, 2021

    Three regular hexagons small

  39. two squares overlapping a square ii Feb 23, 2021

    Two Squares Overlapping a Square II

  40. three congruent triangles Feb 21, 2021

    Three Congruent Triangles

  41. two triangles overlapping a quarter circle Feb 20, 2021

    Two Triangles Overlapping a Quarter Circle

  42. three congruent rectangles iii Feb 19, 2021

    Three Congruent Rectangles III

  43. three congruent triangles in a semi-circle Feb 18, 2021

    Three Congruent Triangles in a Semi-Circle

  44. triangle over a circle Feb 17, 2021

    Triangle Over a Circle

  45. multiple semi-circles iv Feb 16, 2021

    Multiple Semi-Circles IV

  46. four squares iv Feb 15, 2021

    Four Squares IV

  47. two squares overlapping a square Feb 14, 2021

    Two Squares Overlapping a Square

  48. zig-zag inside a square Feb 13, 2021

    Zig-zag Inside a Square

  49. two semi-circles in a semi-circle Feb 11, 2021

    Two Semi-Circles in a Semi-Circle

  50. six triangles in a hexagon Feb 9, 2021

    Six Triangles in a Hexagon

  51. two overlapping triangles Feb 7, 2021

    Two Overlapping Triangles

  52. four squares inside a rectangle Jan 31, 2021

    Four Squares Inside a Rectangle

  53. two triangles in a circle and semi-circle Jan 30, 2021

    Two Triangles in a Circle and Semi-Circle

  54. triangle in a rectangle Jan 29, 2021

    Triangle in a Rectangle

  55. multiple semi-circles ii Jan 27, 2021

    Multiple Semi-Circles II

  56. square overlapping a square and a rectangle Jan 24, 2021

    Square Overlapping a Square and a Rectangle

  57. chord splitting a square in half Jan 23, 2021

    Chord Splitting a Square in Half

  58. rectangle tilted over a square Jan 16, 2021

    Rectangle Tilted Over a Square

  59. multiple angles Jan 10, 2021

    Multiple Angles

  60. three circles and two semi-circles in a circle Jan 9, 2021

    Three Circles and Two Semi-Circles in a Circle

  61. four triangles in a square Dec 31, 2020

    Four Triangles in a Square

  62. zig-zag inside a rectangle Dec 30, 2020

    Zig-zag Inside a Rectangle

  63. five squares across a square Dec 23, 2020

    Five Squares Across a Square

  64. two squares and a semi-circle Dec 13, 2020

    Two Squares and a Semi-Circle

  65. two circles in a square ii Oct 31, 2020

    Two Circles in a Square II

  66. triangles formed from rectangles Oct 29, 2020

    Triangles Formed from Rectangles

  67. three triangles in a circle in a triangle Oct 24, 2020

    Three Triangles in a Circle in a Triangle

  68. two quarter circles in a semi-circle Aug 31, 2020

    Two Quarter Circles in a Semi-Circle

  69. circle inside a triangle Aug 28, 2020

    Circle Inside a Triangle

  70. similar rectangles Aug 26, 2020

    Similar Rectangles

  71. two semi-circles in a circle Aug 21, 2020

    Two Semi-Circles in a Circle

  72. semi-circle and quarter circle in a square Aug 17, 2020

    Semi-Circle and Quarter Circle in a Square

  73. multiple semi-circles in a circle Aug 15, 2020

    Multiple Semi-Circles in a Circle

  74. four squares iii Aug 14, 2020

    Four Squares III

  75. triangle over two rectangles Aug 7, 2020

    Triangle Over Two Rectangles

  76. subdivided decagon Jul 30, 2020

    Subdivided Decagon

  77. two congruent rectangles and a semi-circle Jul 29, 2020

    Two Congruent Rectangles and a Semi-Circle

  78. a rectangle in a square Jul 26, 2020

    A Rectangle in a Square

  79. two half-squares and a circle Jul 25, 2020

    Two Half-Squares and a Circle

  80. three congruent rectangles ii Jul 23, 2020

    Three Congruent Rectangles II

  81. semi-circle in a square in a quarter circle Jul 19, 2020

    Semi-Circle in a Square in a Quarter Circle

  82. two triangles and three concentric semi-circles Jul 18, 2020

    Two Triangles and Three Concentric Semi-Circles

  83. five congruent rectangles Jul 15, 2020

    Five Congruent Rectangles

  84. five rectangles tiling a square Jul 11, 2020

    Five Rectangles Tiling a Square

  85. rectangle overlapping a circle Jul 5, 2020

    Rectangle Overlapping a Circle

  86. swirling semi-circles Jun 14, 2020

    Swirling Semi-Circles

  87. hexagon in a quarter circle May 31, 2020

    Hexagon in a Quarter Circle

  88. six semi-circles inside a hexagon May 30, 2020

    Six Semi-Circles Inside a Hexagon

  89. four quarter circles May 29, 2020

    Four Quarter Circles

  90. two overlapping triangles and a circle May 28, 2020

    Two Overlapping Triangles and a Circle

  91. two squares diagonally inside a rectangle May 26, 2020

    Two Squares Diagonally Inside a Rectangle

  92. two circles and two semi-circles May 25, 2020

    Two Circles and Two Semi-Circles

  93. two tilted squares May 23, 2020

    Two Tilted Squares

  94. a circle and two semi-circles in two hexagons May 14, 2020

    A Circle and Two Semi-Circles in Two Hexagons

  95. four squares overlapping a rectangle May 9, 2020

    Four Squares Overlapping a Rectangle

  96. two semi-circles and a triangle May 8, 2020

    Two Semi-Circles and a Triangle

  97. a square and a hexagon May 5, 2020

    A Square and a Hexagon

  98. five circles in a square May 2, 2020

    Five Circles in a Square

  99. two quarter circles in a rectangle in a semi-circle Apr 30, 2020

    Two Quarter Circles in a Rectangle in a Semi-Circle

  100. four squares ii Apr 28, 2020

    Four Squares II

  101. four squares Apr 26, 2020

    Four Squares

  102. two circles inside an equilateral triangle Apr 25, 2020

    Two Circles Inside an Equilateral Triangle

  103. three congruent rectangles Apr 24, 2020

    Three Congruent Rectangles

  104. four congruent squares inside a larger square Apr 23, 2020

    Four Congruent Squares Inside a Larger Square

  105. two semi-circles and an equilateral triangle Apr 22, 2020

    Two Semi-Circles and an Equilateral Triangle

  106. two quarter circles and a semi-circle Apr 21, 2020

    Two Quarter Circles and a Semi-Circle

  107. three stacked squares Apr 19, 2020

    Three Stacked Squares

  108. two circles in a square Apr 18, 2020

    Two Circles in a Square

  109. three overlapping rectangles ii Apr 17, 2020

    Three Overlapping Rectangles II

  110. semi-circle splitting a triangle Apr 16, 2020

    Semi-Circle Splitting a Triangle

  111. two semi-circles diagonally across a square Apr 15, 2020

    Two Semi-Circles Diagonally Across a Square

  112. two neighbouring rectangles Apr 13, 2020

    Two Neighbouring Rectangles

  113. two overlapping semi-circles Apr 12, 2020

    Two Overlapping Semi-Circles

  114. nested semi-circles Apr 11, 2020

    Nested Semi-Circles

  115. two circles in a triangle Apr 10, 2020

    Two Circles in a Triangle

  116. tangential hexagon and circle Apr 9, 2020

    Tangential Hexagon and Circle

  117. three overlapping rectangles Apr 8, 2020

    Three Overlapping Rectangles

  118. three circles forming a triangle Apr 7, 2020

    Three Circles Forming a Triangle

  119. four squares in a circle Apr 6, 2020

    Four Squares in a Circle

  120. three equal area rectangles Apr 5, 2020

    Three Equal Area Rectangles

  121. six equal area rectangles Apr 4, 2020

    Six Equal Area Rectangles

  122. angle formed by three squares Apr 2, 2020

    Angle Formed by Three Squares

  123. quadrilateral splitting a semi-circle Apr 1, 2020

    Quadrilateral Splitting a Semi-Circle

  124. two regular hexagons Mar 28, 2020

    Two Regular Hexagons

  125. three squares in a circle Mar 21, 2020

    Three Squares in a Circle

  126. two squares and an equilateral triangle Mar 14, 2020

    Two Squares and an Equilateral Triangle

  127. quarter circles in a rectangle in a circle Mar 7, 2020

    Quarter Circles in a Rectangle in a Circle

  128. nested isosceles triangles Mar 5, 2020

    Nested Isosceles Triangles

  129. five circles in a rectangle in a semi-circle Feb 29, 2020

    Five Circles in a Rectangle in a Semi-Circle

  130. two semi-circles inside a rectangle Feb 23, 2020

    Two Semi-Circles Inside a Rectangle

  131. two squares inside an equilateral triangle Feb 22, 2020

    Two Squares Inside an Equilateral Triangle

  132. tilted rectangle in a square Feb 20, 2020

    Tilted Rectangle in a Square

  133. circle in a quarter circle Feb 18, 2020

    Circle in a Quarter Circle

  134. three semi-circles Feb 16, 2020

    Three Semi-Circles

  135. a square and a rectangle overlapping Feb 14, 2020

    A Square and a Rectangle Overlapping

  136. three circles in a hexagon in a circle Feb 10, 2020

    Three Circles in a Hexagon in a Circle

  137. three circles Feb 8, 2020

    Three Circles

  138. three squares in a triangle Feb 4, 2020

    Three Squares in a Triangle

  139. four squares Feb 1, 2020

    Four Squares

  140. arcs in a semi-circle Jan 30, 2020

    Arcs in a Semi-Circle

  141. three isoscelese triangles inside a triangle Jan 23, 2020

    Three Isoscelese Triangles Inside a Triangle

  142. square and rectangle overlapping in a semi-circle Jan 16, 2020

    Square and Rectangle Overlapping in a Semi-Circle

  143. three stacked squares and a fourth square Jan 12, 2020

    Three Stacked Squares and a Fourth Square

  144. parallelogram area Jan 7, 2020

    Parallelogram Area

  145. three squares Jan 4, 2020

    Three Squares

  146. parallelogram in a rectangle Jan 1, 2020

    Parallelogram in a Rectangle

  147. three circles in a rectangle Dec 31, 2019

    Three Circles in a Rectangle

  148. two semi-circles inside a semi-circle Dec 29, 2019

    Two Semi-Circles Inside a Semi-Circle

  149. two squares Dec 28, 2019

    Two Squares

  150. pentagram in a circle Dec 24, 2019

    Pentagram in a Circle

  151. rectangle quartered by semi-circles Dec 23, 2019

    Rectangle Quartered by Semi-Circles

  152. chord dividing a triangle into two Dec 22, 2019

    Chord Dividing a Triangle into Two

  153. two pentagons Dec 20, 2019

    Two Pentagons

  154. two circles in a rectangle Dec 17, 2019

    Two Circles in a Rectangle

  155. angle formed by three rectangles Dec 14, 2019

    Angle Formed by Three Rectangles

  156. two rectangles in a square Dec 12, 2019

    Two rectangles in a square small

  157. five semi-circles around a rectangle Dec 11, 2019

    Five Semi-Circles Around a Rectangle

  158. three equal angles in a rectangle Dec 7, 2019

    Three Equal Angles in a Rectangle

  159. a square, a circle, and a rectangle Dec 4, 2019

    A Square, A Circle, and a Rectangle

  160. three right-angled triangles Nov 30, 2019

    Three Right-Angled Triangles

  161. two rectangles overlapping a square Nov 24, 2019

    Two Rectangles Overlapping a Square

  162. areas in a crossed trapezium Nov 20, 2019

    Areas in a Crossed Trapezium

  163. seven hexagons Nov 18, 2019

    Seven Hexagons

  164. a pattern of squares Nov 17, 2019

    A Pattern of Squares

  165. three hexagons and a rectangle Nov 15, 2019

    Three Hexagons and a Rectangle

  166. six circles inside a circle inside a square Nov 9, 2019

    Six Circles Inside a Circle Inside a Square

  167. stacked squares inside two squares Nov 7, 2019

    Stacked Squares Inside Two Squares

  168. three squares inside a triangle Oct 30, 2019

    Three Squares Inside a Triangle

  169. three congruent triangles Oct 29, 2019

    Three Congruent Triangles

  170. two semi-circles inside a semi-circle ii Oct 27, 2019

    Two Semi-Circles Inside a Semi-Circle II

  171. multiple semi-circles Oct 25, 2019

    Multiple Semi-Circles

  172. two congruent rectangles in a square Oct 24, 2019

    Two Congruent Rectangles in a Square

  173. three circles in a rectangle ii Oct 19, 2019

    Three Circles in a Rectangle II

  174. overlapping triangles in a circle Oct 13, 2019

    Overlapping Triangles in a Circle

  175. diagonal in a square Oct 11, 2019

    Diagonal in a Square

  176. seven circles Oct 5, 2019

    Seven Circles

  177. angles in two hexagons Sep 28, 2019

    Angles in Two Hexagons

  178. three overlapping squares Sep 19, 2019

    Three Overlapping Squares

  179. four squares and a semi-circle Sep 7, 2019

    Four Squares and a Semi-Circle

  180. two overlapping hexagons and a rectangle Sep 2, 2019

    Two Overlapping Hexagons and a Rectangle

  181. two rectangles of equal area Aug 31, 2019

    Two Rectangles of Equal Area

  182. three squares overlapping a semi-circle Aug 29, 2019

    Three Squares Overlapping a Semi-Circle

  183. two hexagons and a square Aug 28, 2019

    Two Hexagons and a Square

  184. four hexagons Aug 26, 2019

    Four Hexagons

  185. two squares in a semi-circle Aug 24, 2019

    Two Squares in a Semi-Circle

  186. three squares in a semi-circle Aug 23, 2019

    Three Squares in a Semi-Circle

  187. three congruent squares overlapping a square Aug 22, 2019

    Three Congruent Squares Overlapping a Square

  188. three triangles in a square Aug 20, 2019

    Three Triangles in a Square

  189. trisected hexagon Aug 19, 2019

    Trisected Hexagon

  190. two congruent quadrilaterals and a rectangle Aug 16, 2019

    Two Congruent Quadrilaterals and a Rectangle

  191. semi-circle in a square Aug 14, 2019

    Semi-Circle in a Square

  192. circle in pentagon in semi-circle Aug 11, 2019

    Circle In Pentagon in Semi-Circle

  193. rectangles in concentric rings Aug 9, 2019

    Rectangles in Concentric Rings

  194. three regular hexagons Aug 8, 2019

    Three regular hexagons small

  195. one rectangle inside another with semi-circles Aug 5, 2019

    One Rectangle Inside Another With Semi-Circles

  196. two rectangles and a semi-circle Aug 3, 2019

    Two Rectangles and a Semi-Circle

  197. three equilateral triangles and a semi-circle Aug 2, 2019

    Three Equilateral Triangles and a Semi-Circle

  198. three circles in a semi-circle Aug 1, 2019

    Three Circles in a Semi-Circle

  199. upside-down semi-circles in a semi-circle Jul 30, 2019

    Upside-Down Semi-Circles in a Semi-Circle

  200. stacked triangles Jul 29, 2019

    Stacked Triangles

  201. triangles in a dodecagon Jul 27, 2019

    Triangles in a Dodecagon

  202. angle formed by two squares ii Jul 26, 2019

    Angle Formed by Two Squares II

  203. three parallel semi-circles Jul 24, 2019

    Three Parallel Semi-Circles

  204. semi-circle in a right-angled triangle Jul 23, 2019

    Semi-Circle in a Right-Angled Triangle

  205. three congruent squares in a rectangle Jul 22, 2019

    Three Congruent Squares in a Rectangle

  206. three hexagons in a trapezium Jul 20, 2019

    Three Hexagons in a Trapezium

  207. stack of congruent rectangles Jun 28, 2019

    Stack of Congruent Rectangles

  208. angles in a circle Jun 27, 2019

    Angles in a Circle

  209. striped dodecagon Jun 24, 2019

    Striped Dodecagon

  210. two squares overlapping a third square Jun 15, 2019

    Two Squares Overlapping a Third Square

  211. three squares and a semi-circle Jun 7, 2019

    Three Squares and a Semi-Circle

  212. three congruent rectangles ii Jun 4, 2019

    Three Congruent Rectangles II

  213. rectangle, circle, and triangle Jun 1, 2019

    Rectangle, Circle, and Triangle

  214. two regular hexagons May 30, 2019

    Two Regular Hexagons

  215. angle in a circle and semi-circle May 28, 2019

    Angle in a Circle and Semi-Circle

  216. circle and two squares May 26, 2019

    Circle and Two Squares

  217. divided hexagon May 25, 2019

    Divided Hexagon

  218. two overlapping squares May 20, 2019

    Two Overlapping Squares

  219. two squares in a triangle May 19, 2019

    Two Squares in a Triangle

  220. a semi-circle and quarter circle in a square May 17, 2019

    A Semi-Circle and Quarter Circle in a Square

  221. overlapping triangle and hexagon May 14, 2019

    Overlapping Triangle and Hexagon

  222. overlapping triangle and rectangle May 10, 2019

    Overlapping Triangle and Rectangle

  223. divided hexagon ii May 8, 2019

    Divided Hexagon II

  224. semi-circle between two quarter circles May 6, 2019

    Semi-Circle Between Two Quarter Circles

  225. two squares and two equilateral triangles ii May 5, 2019

    Two Squares and Two Equilateral Triangles II

  226. two squares and two equilateral triangles iii May 5, 2019

    Two Squares and Two Equilateral Triangles III

  227. angles in two circles May 3, 2019

    Angles in Two Circles

  228. square with midpoints May 1, 2019

    Square with Midpoints

  229. angle formed by two squares Apr 28, 2019

    Angle Formed by Two Squares

  230. two circles inside two polygons inside a circle Apr 26, 2019

    Two Circles Inside Two Polygons Inside a Circle

  231. quartered hexagon Apr 24, 2019

    Quartered Hexagon

  232. two semi-circles in a square Apr 22, 2019

    Two Semi-Circles in a Square

  233. three semi-circles around a triangle Apr 20, 2019

    Three Semi-Circles Around a Triangle

  234. two overlapping squares ii Apr 18, 2019

    Two Overlapping Squares II

  235. two rectangles with diagonals Apr 17, 2019

    Two Rectangles with Diagonals

  236. two semi-circles and a rectangle Apr 16, 2019

    Two Semi-Circles and a Rectangle

  237. semi-circle on a hexagon Apr 14, 2019

    Semi-Circle on a Hexagon

  238. divided square Apr 12, 2019

    Divided Square

  239. three adjacent triangles Apr 10, 2019

    Three Adjacent Triangles

  240. triangle and circle inside square Apr 7, 2019

    Triangle and Circle Inside Square

  241. two squares on a triangle Apr 4, 2019

    Two Squares on a Triangle

  242. square, rectangle, and two semi-circles Apr 3, 2019

    Square, Rectangle, and Two Semi-Circles

  243. three triangles and a rectangle inside a circle Mar 30, 2019

    Three Triangles and a Rectangle Inside a Circle

  244. triangle inside a square Mar 26, 2019

    Triangle Inside a Square

  245. triangle inside circle and triangle Mar 20, 2019

    Triangle Inside Circle and Triangle

  246. circle in triangle in square Mar 17, 2019

    Circle in Triangle in Square

  247. quarter circles in a square in a circle Mar 16, 2019

    Quarter Circles in a Square in a Circle

  248. triangle overlapping a hexagon Mar 13, 2019

    Triangle Overlapping a Hexagon

  249. two circles in a triangle Mar 10, 2019

    Two Circles in a Triangle

  250. inverse star in a rectangle Mar 7, 2019

    Inverse Star in a Rectangle

  251. three overlapping circles Mar 3, 2019

    Three Overlapping Circles

  252. three tilted rectangles Mar 1, 2019

    Three Tilted Rectangles

  253. overlapping hexagons Feb 26, 2019

    Overlapping Hexagons

  254. square overlapping a quarter circle Feb 24, 2019

    Square Overlapping a Quarter Circle

  255. two hexagons in a rectangle Feb 23, 2019

    Two Hexagons in a Rectangle

  256. semi-circle in a circle Feb 22, 2019

    Semi-Circle in a Circle

  257. two triangles overlapping a rectangle Feb 21, 2019

    Two Triangles Overlapping a Rectangle

  258. square on an octagon Feb 19, 2019

    Square on an Octagon

  259. circle and semi-circle in triangle Feb 18, 2019

    Circle and Semi-Circle in Triangle

  260. overlapping triangles Feb 16, 2019

    Overlapping Triangles

  261. tilted rectangles Feb 13, 2019

    Tilted Rectangles

  262. triangle in semi-circle with square Feb 11, 2019

    Triangle in Semi-Circle with Square

  263. circles in overlapping triangles Feb 7, 2019

    Circles in Overlapping Triangles

  264. tilted triangles Feb 2, 2019

    Tilted Triangles

  265. two quarter circles in a square Jan 28, 2019

    Two Quarter Circles in a Square

  266. two squares and a rectangle in an octagon Jan 26, 2019

    Two Squares and a Rectangle in an Octagon

  267. square overlapping a circle Jan 25, 2019

    Square Overlapping a Circle

  268. six semi-circles in a circle Jan 21, 2019

    Six Semi-Circles in a Circle

  269. rectangle on a hexagon Jan 19, 2019

    Rectangle on a Hexagon

  270. two squares on a circle Jan 16, 2019

    Two Squares on a Circle

  271. pentagon with two semi-circles Jan 14, 2019

    Pentagon with two Semi-Circles

  272. striped hexagon Jan 13, 2019

    Striped Hexagon

  273. circle in a hexagon in a semi-circle Jan 11, 2019

    Circle in a Hexagon in a Semi-Circle

  274. overlapping rectangle and semi-circle Jan 5, 2019

    Overlapping Rectangle and Semi-Circle

  275. two rectangles in a semi-circle Dec 31, 2018

    Two Rectangles in a Semi-Circle

  276. divided hexagon iii Dec 30, 2018

    Divided Hexagon III

  277. circles around a triangle Dec 16, 2018

    Circles Around a Triangle

  278. rectangles stacked in a semi-circle Dec 12, 2018

    Rectangles Stacked in a Semi-Circle

  279. two circles, two squares Dec 11, 2018

    Two Circles, Two Squares

  280. subdivided square Dec 5, 2018

    Subdivided Square

  281. chords dividing a triangle into five Dec 3, 2018

    Chords Dividing a Triangle into Five

  282. three rectangles as a triangle Dec 1, 2018

    Three Rectangles as a Triangle

  283. partitioned square Nov 28, 2018

    Partitioned Square

  284. two squares overlapping a semi-circle Nov 26, 2018

    Two Squares Overlapping a Semi-Circle

  285. five triangles in a rectangle Nov 25, 2018

    Five Triangles in a Rectangle

  286. nested circles and a triangle Nov 24, 2018

    Nested Circles and a Triangle

  287. square in a triangle in a square Nov 23, 2018

    Square in a Triangle in a Square

  288. quarter circles in a rectangle Nov 22, 2018

    Quarter Circles in a Rectangle

  289. semi-circles in a quarter circle Nov 21, 2018

    Semi-Circles in a Quarter Circle

  290. three squares on a line Nov 19, 2018

    Three Squares on a Line

  291. nested circles and polygons Nov 18, 2018

    Nested Circles and Polygons

  292. semi-circle and tangents in a square Nov 17, 2018

    Semi-Circle and Tangents in a Square

  293. three regular hexagons ii Nov 14, 2018

    Three regular hexagons ii small

  294. triangles in a semi-circle Nov 13, 2018

    Triangles in a Semi-Circle

  295. equilateral triangles in a square Nov 12, 2018

    Equilateral Triangles in a Square

  296. three aligned triangles Nov 11, 2018

    Three Aligned Triangles

  297. crossed hexagon Nov 10, 2018

    Crossed Hexagon

  298. square in a semi-circle in a square Nov 8, 2018

    Square in a Semi-Circle in a Square

  299. two equilateral triangles in a semi-circle Nov 7, 2018

    Two Equilateral Triangles in a Semi-Circle

  300. three squares in a circle Nov 5, 2018

    Three Squares in a Circle

  301. square in a circle in a quarter circle in a square Nov 4, 2018

    Square in a Circle in a Quarter Circle in a Square

  302. arcs inside a triangle Nov 2, 2018

    Arcs Inside a Triangle

  303. quadrilateral from two squares in a square Oct 30, 2018

    Quadrilateral from Two Squares in a Square

  304. triangle centres and square corners Oct 29, 2018

    Triangle Centres and Square Corners

  305. hexagon and concentric circles Oct 28, 2018

    Hexagon and Concentric Circles

  306. chord and annulus Oct 27, 2018

    Chord and Annulus

  307. dissected hexagon Oct 26, 2018

    Dissected Hexagon

  308. circles in rhombii sequal Oct 26, 2018

    Circles in Rhombii Sequal

  309. circles in triangle and rhombus Oct 25, 2018

    Circles in Triangle and Rhombus

  310. circles resting on triangles Oct 24, 2018

    Circles Resting on Triangles

  311. arbelos Oct 23, 2018

    Arbelos

  312. four circles in a triangle in a circle Oct 22, 2018

    Four Circles in a Triangle in a Circle

  313. triangles with a parallelogram Oct 21, 2018

    Triangles with a Parallelogram

  314. three squares in a square Oct 18, 2018

    Three Squares in a Square

  315. two circles in an equilateral triangle Oct 17, 2018

    Two Circles in an Equilateral Triangle

  316. semi-circles in a square Oct 15, 2018

    Semi-Circles in a Square

  317. five rectangles in a square Oct 14, 2018

    Five Rectangles in a Square

  318. five overlapping circles Oct 11, 2018

    Five Overlapping Circles

  319. four regular polygons Oct 8, 2018

    Four Regular Polygons

  320. four squares around a quadrilateral Oct 7, 2018

    Four Squares Around a Quadrilateral

  321. two perpendicular equilateral triangles Oct 6, 2018

    Two Perpendicular Equilateral Triangles

  322. nested circles and polygons ii Oct 5, 2018

    Nested Circles and Polygons II

  323. spiralling semi-circles Oct 3, 2018

    Spiralling Semi-Circles

  324. five decreasing squares Oct 1, 2018

    Five Decreasing Squares

  325. triangle and semi-circle in a circle Sep 29, 2018

    Triangle and Semi-Circle in a Circle

  326. subdivided parallelogram Sep 27, 2018

    Subdivided Parallelogram

  327. triangle in four rectangles Sep 26, 2018

    Triangle in Four Rectangles

  328. circle in a trapezium Sep 24, 2018

    Circle in a Trapezium

  329. subdivided triangle Sep 19, 2018

    Subdivided Triangle

  330. two circles inside a square Sep 17, 2018

    Two Circles Inside a Square

  331. concentric semi-circles Sep 16, 2018

    Concentric Semi-Circles

  332. shaded spikes in a hexagon Sep 14, 2018

    Shaded Spikes in a Hexagon

  333. squares in an octagon Sep 11, 2018

    Squares in an Octagon

  334. four squares in a big square Sep 9, 2018

    Four Squares in a Big Square

  335. four stacked squares in a circle in a square Sep 8, 2018

    Four Stacked Squares in a Circle in a Square

  336. stacked boxes in circles in squares Sep 8, 2018

    Stacked Boxes in Circles in Squares

  337. overlapping square and circle Sep 6, 2018

    Overlapping Square and Circle

  338. two circles inscribed in triangles in a semi-circle Sep 3, 2018

    Two Circles Inscribed in Triangles in a Semi-Circle

  339. arcs in a circle Sep 1, 2018

    Arcs in a Circle

  340. six squares in a hexagon Aug 31, 2018

    Six Squares in a Hexagon

  341. four equilateral triangles round a square Aug 30, 2018

    Four Equilateral Trangles Round a Square

  342. two overlapping squares iii Aug 28, 2018

    Two Overlapping Squares III

  343. two isosceles triangles Aug 28, 2018

    Two Isosceles Triangles

  344. four isosceles triangles in a circle Aug 26, 2018

    Four Isosceles Triangles in a Circle

  345. hexagon in a star in a hexagon Aug 24, 2018

    Hexagon in a Star in a Hexagon

  346. stacked hexagons Aug 23, 2018

    Stacked Hexagons

  347. a square, triangle, and circle in a square Aug 22, 2018

    A Square, Triangle, and Circle in a Square

  348. region of an octagon Aug 21, 2018

    Region of an Octagon

  349. semi-circle in a square Aug 20, 2018

    Semi-Circle in a Square

  350. polygons with equal perimeter Aug 19, 2018

    Polygons with Equal Perimeter

  351. stacked shapes Aug 19, 2018

    Stacked Shapes

  352. four squares overlapping a circle Aug 17, 2018

    Four Squares Overlapping a Circle

  353. triangle in circle in triangle in semi-circle Aug 15, 2018

    Triangle in Circle in Triangle in Semi-Circle

  354. bell-ringing braids Aug 14, 2018

    Bell-Ringing Braids

  355. four equilateral triangles Aug 13, 2018

    Four equilateral triangles small

  356. two squares and two equilateral triangles Aug 13, 2018

    TwoSquaresandTwoEquilateralTriangles_small.png

  357. squares meeting in a circle Aug 12, 2018

    Squares Meeting in a Circle

  358. zig-zag triangles Aug 12, 2018

    Zig-zag Triangles

  359. four aligned squares Aug 10, 2018

    Four Aligned Squares

  360. lengths in a crossed trapezium Aug 9, 2018

    Lengths in a Crossed Trapezium

  361. three aligned squares Aug 9, 2018

    Three Aligned Squares

  362. overlapping squares Aug 8, 2018

    Overlapping Squares

  363. toppled square Aug 7, 2018

    Toppled Square

  364. two rectangles overlapping a circle Aug 2, 2018

    Two Rectangles Overlapping a Circle

  365. subdivided circles May 21, 2018

    Subdivided Circles

  366. two circles inside a triangle __

    Two Circles Inside a Triangle

  367. two overlapping congruent squares __

    Two Overlapping Congruent Squares

  368. rectangle and hexagon __

    Rectangle and Hexagon

  369. angle in two overlapping squares __

    Angle in Two Overlapping Squares

  370. three congruent rectangles __

    Three Congruent Rectangles

  371. three squares and an equilateral triangle __

    Three Squares and an Equilateral Triangle