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\begin{document}

%-------------------------------------------------------------------

\section*{Catriona Agg&#39;s puzzles 2019}

\hypertarget{catriona_aggs_geometry_puzzles_from_2019}{}\section*{{Catriona Agg's Geometry Puzzles from 2019}}\label{catriona_aggs_geometry_puzzles_from_2019}

\begin{enumerate}%
\item [[three circles in a rectangle]] \emph{Dec 31, 2019}

[[ThreeCirclesinaRectangle\_small.png:pic]]


\item [[two semi-circles inside a semi-circle]] \emph{Dec 29, 2019}

[[TwoSemiCirclesInsideaSemiCircle\_small.png:pic]]


\item [[two squares]] \emph{Dec 28, 2019}

[[TwoSquares\_small.png:pic]]


\item [[three squares and an equilateral triangle]] \emph{Dec 26, 2019}

[[ThreeSquaresandanEquilateralTriangle\_small.png:pic]]


\item [[pentagram in a circle]] \emph{Dec 24, 2019}

[[PentagraminaCircle\_small.png:pic]]


\item [[rectangle quartered by semi-circles]] \emph{Dec 23, 2019}

[[RectangleQuarteredbySemiCircles\_small.png:pic]]


\item [[chord dividing a triangle into two]] \emph{Dec 22, 2019}

[[ChordDividingaTriangleintoTwo\_small.png:pic]]


\item [[two pentagons]] \emph{Dec 20, 2019}

[[TwoPentagons\_small.png:pic]]


\item [[two circles in a rectangle]] \emph{Dec 17, 2019}

[[TwoCirclesinaRectangle\_small.png:pic]]


\item [[angle formed by three rectangles]] \emph{Dec 14, 2019}

[[AngleFormedbyThreeRectangles\_small.png:pic]]


\item [[two rectangles in a square]] \emph{Dec 12, 2019}

[[TwoRectanglesinaSquare\_small.png:pic]]


\item [[five semi-circles around a rectangle]] \emph{Dec 11, 2019}

[[FiveSemiCirclesAroundaRectangle\_small.png:pic]]


\item [[three equal angles in a rectangle]] \emph{Dec 7, 2019}

[[ThreeEqualAnglesinaRectangle\_small.png:pic]]


\item [[a square, a circle, and a rectangle]] \emph{Dec 4, 2019}

[[ASquareACircleandaRectangle\_small.png:pic]]


\item [[three right-angled triangles]] \emph{Nov 30, 2019}

[[ThreeRightAngledTriangles\_small.png:pic]]


\item [[two rectangles overlapping a square]] \emph{Nov 24, 2019}

[[TwoRectanglesOverlappingaSquare\_small.png:pic]]


\item [[areas in a crossed trapezium]] \emph{Nov 20, 2019}

[[AreasinaCrossedTrapezium\_small.png:pic]]


\item [[seven hexagons]] \emph{Nov 18, 2019}

[[SevenHexagons\_small.png:pic]]


\item [[a pattern of squares]] \emph{Nov 17, 2019}

[[APatternofSquares\_small.png:pic]]


\item [[three hexagons and a rectangle]] \emph{Nov 15, 2019}

[[ThreeHexagonsandaRectangle\_small.png:pic]]


\item [[six circles inside a circle inside a square]] \emph{Nov 9, 2019}

[[SixCirclesInsideaCircleInsideaSquare\_small.png:pic]]


\item [[stacked squares inside two squares]] \emph{Nov 7, 2019}

[[StackedSquaresInsideTwoSquares\_small.png:pic]]


\item [[three squares inside a triangle]] \emph{Oct 30, 2019}

[[ThreeSquaresInsideaTriangle\_small.png:pic]]


\item [[three congruent triangles]] \emph{Oct 29, 2019}

[[ThreeCongruentTriangles\_small.png:pic]]


\item [[two semi-circles inside a semi-circle ii]] \emph{Oct 27, 2019}

[[TwoSemiCirclesInsideaSemiCircleII\_small.png:pic]]


\item [[multiple semi-circles]] \emph{Oct 25, 2019}

[[MultipleSemiCircles\_small.png:pic]]


\item [[two congruent rectangles in a square]] \emph{Oct 24, 2019}

[[TwoCongruentRectanglesinaSquare\_small.png:pic]]


\item [[three circles in a rectangle ii]] \emph{Oct 19, 2019}

[[ThreeCirclesinaRectangleII\_small.png:pic]]


\item [[overlapping triangles in a circle]] \emph{Oct 13, 2019}

[[OverlappingTrianglesinaCircle\_small.png:pic]]


\item [[diagonal in a square]] \emph{Oct 11, 2019}

[[DiagonalinaSquare\_small.png:pic]]


\item [[seven circles]] \emph{Oct 5, 2019}

[[SevenCircles\_small.png:pic]]


\item [[angles in two hexagons]] \emph{Sep 28, 2019}

[[AnglesinTwoHexagons\_small.png:pic]]


\item [[three overlapping squares]] \emph{Sep 19, 2019}

[[ThreeOverlappingSquares\_small.png:pic]]


\item [[four squares and a semi-circle]] \emph{Sep 7, 2019}

[[FourSquaresandaSemiCircle\_small.png:pic]]


\item [[two overlapping hexagons and a rectangle]] \emph{Sep 2, 2019}

[[TwoOverlappingHexagonsandaRectangle\_small.png:pic]]


\item [[two rectangles of equal area]] \emph{Aug 31, 2019}

[[TwoRectanglesofEqualArea\_small.png:pic]]


\item [[three squares overlapping a semi-circle]] \emph{Aug 29, 2019}

[[ThreeSquaresOverlappingaSemiCircle\_small.png:pic]]


\item [[two hexagons and a square]] \emph{Aug 28, 2019}

[[TwoHexagonsandaSquare\_small.png:pic]]


\item [[four hexagons]] \emph{Aug 26, 2019}

[[FourHexagons\_small.png:pic]]


\item [[two squares in a semi-circle]] \emph{Aug 24, 2019}

[[TwoSquaresinaSemiCircle\_small.png:pic]]


\item [[three squares in a semi-circle]] \emph{Aug 23, 2019}

[[ThreeSquaresinaSemiCircle\_small.png:pic]]


\item [[three congruent squares overlapping a square]] \emph{Aug 22, 2019}

[[ThreeCongruentSquaresOverlappingaSquare\_small.png:pic]]


\item [[three triangles in a square]] \emph{Aug 20, 2019}

[[ThreeTrianglesinaSquare\_small.png:pic]]


\item [[trisected hexagon]] \emph{Aug 19, 2019}

[[TrisectedHexagon\_small.png:pic]]


\item [[two congruent quadrilaterals and a rectangle]] \emph{Aug 16, 2019}

[[TwoCongruentQuadrilateralsandaRectangle\_small.png:pic]]


\item [[semi-circle in a square ii]] \emph{Aug 14, 2019}

[[SemiCircleinaSquareII\_small.png:pic]]


\item [[circle in pentagon in semi-circle]] \emph{Aug 11, 2019}

[[CircleInPentagoninSemiCircle\_small.png:pic]]


\item [[rectangles in concentric rings]] \emph{Aug 9, 2019}

[[RectanglesinConcentricRings\_small.png:pic]]


\item [[three regular hexagons ii]] \emph{Aug 8, 2019}

[[ThreeRegularHexagonsII\_small.png:pic]]


\item [[one rectangle inside another with semi-circles]] \emph{Aug 5, 2019}

[[OneRectangleInsideAnotherWithSemiCircles\_small.png:pic]]


\item [[two rectangles and a semi-circle]] \emph{Aug 3, 2019}

[[TwoRectanglesandaSemiCircle\_small.png:pic]]


\item [[three equilateral triangles and a semi-circle]] \emph{Aug 2, 2019}

[[ThreeEquilateralTrianglesandaSemiCircle\_small.png:pic]]


\item [[three circles in a semi-circle]] \emph{Aug 1, 2019}

[[ThreeCirclesinaSemiCircle\_small.png:pic]]


\item [[upside-down semi-circles in a semi-circle]] \emph{Jul 30, 2019}

[[UpsideDownSemiCirclesinaSemiCircle\_small.png:pic]]


\item [[stacked triangles]] \emph{Jul 29, 2019}

[[StackedTriangles\_small.png:pic]]


\item [[triangles in a dodecagon]] \emph{Jul 27, 2019}

[[TrianglesinaDodecagon\_small.png:pic]]


\item [[angle formed by two squares ii]] \emph{Jul 26, 2019}

[[AngleFormedbyTwoSquaresII\_small.png:pic]]


\item [[three parallel semi-circles]] \emph{Jul 24, 2019}

[[ThreeParallelSemiCircles\_small.png:pic]]


\item [[semi-circle in a right-angled triangle]] \emph{Jul 23, 2019}

[[SemiCircleinaRightAngledTriangle\_small.png:pic]]


\item [[three congruent squares in a rectangle]] \emph{Jul 22, 2019}

[[ThreeCongruentSquaresinaRectangle\_small.png:pic]]


\item [[three hexagons in a trapezium]] \emph{Jul 20, 2019}

[[ThreeHexagonsinaTrapezium\_small.png:pic]]


\item [[regular hexagon and rectangle]] \emph{Jul 12, 2019}

[[RegularHexagonandRectangle\_small.png:pic]]


\item [[stack of congruent rectangles]] \emph{Jun 28, 2019}

[[StackofCongruentRectangles\_small.png:pic]]


\item [[angles in a circle]] \emph{Jun 27, 2019}

[[AnglesinaCircle\_small.png:pic]]


\item [[striped dodecagon]] \emph{Jun 24, 2019}

[[StripedDodecagon\_small.png:pic]]


\item [[two squares overlapping a third square]] \emph{Jun 15, 2019}

[[TwoSquaresOverlappingaThirdSquare\_small.png:pic]]


\item [[three squares and a semi-circle]] \emph{Jun 7, 2019}

[[ThreeSquaresandaSemiCircle\_small.png:pic]]


\item [[three congruent rectangles]] \emph{Jun 4, 2019}

[[ThreeCongruentRectangles\_small.png:pic]]


\item [[rectangle, circle, and triangle]] \emph{Jun 1, 2019}

[[RectangleCircleandTriangle\_small.png:pic]]


\item [[two regular hexagons]] \emph{May 30, 2019}

[[TwoRegularHexagons\_small.png:pic]]


\item [[angle in a circle and semi-circle]] \emph{May 28, 2019}

[[AngleinaCircleandSemiCircle\_small.png:pic]]


\item [[circle and two squares]] \emph{May 26, 2019}

[[CircleandTwoSquares\_small.png:pic]]


\item [[divided hexagon]] \emph{May 25, 2019}

[[DividedHexagon\_small.png:pic]]


\item [[two overlapping squares]] \emph{May 20, 2019}

[[TwoOverlappingSquares\_small.png:pic]]


\item [[two squares in a triangle]] \emph{May 19, 2019}

[[TwoSquaresinaTriangle\_small.png:pic]]


\item [[a semi-circle and quarter circle in a square]] \emph{May 17, 2019}

[[ASemiCircleandQuarterCircleinaSquare\_small.png:pic]]


\item [[overlapping triangle and hexagon]] \emph{May 14, 2019}

[[OverlappingTriangleandHexagon\_small.png:pic]]


\item [[overlapping triangle and rectangle]] \emph{May 10, 2019}

[[OverlappingTriangleandRectangle\_small.png:pic]]


\item [[divided hexagon ii]] \emph{May 8, 2019}

[[DividedHexagonII\_small.png:pic]]


\item [[semi-circle between two quarter circles]] \emph{May 6, 2019}

[[SemiCircleBetweenTwoQuarterCircles\_small.png:pic]]


\item [[two squares and two equilateral triangles iii]] \emph{May 5, 2019}

[[TwoSquaresandTwoEquilateralTrianglesIII\_small.png:pic]]


\item [[two squares and two equilateral triangles ii]] \emph{May 5, 2019}

[[TwoSquaresandTwoEquilateralTrianglesII\_small.png:pic]]


\item [[angles in two circles]] \emph{May 3, 2019}

[[AnglesinTwoCircles\_small.png:pic]]


\item [[square with midpoints]] \emph{May 1, 2019}

[[SquarewithMidpoints\_small.png:pic]]


\item [[angle formed by two squares]] \emph{Apr 28, 2019}

[[AngleFormedbyTwoSquares\_small.png:pic]]


\item [[two circles inside two polygons inside a circle]] \emph{Apr 26, 2019}

[[TwoCirclesInsideTwoPolygonsInsideaCircle\_small.png:pic]]


\item [[quartered hexagon]] \emph{Apr 24, 2019}

[[QuarteredHexagon\_small.png:pic]]


\item [[two semi-circles in a square]] \emph{Apr 22, 2019}

[[TwoSemiCirclesinaSquare\_small.png:pic]]


\item [[three semi-circles around a triangle]] \emph{Apr 20, 2019}

[[ThreeSemiCirclesAroundaTriangle\_small.png:pic]]


\item [[two overlapping squares ii]] \emph{Apr 18, 2019}

[[TwoOverlappingSquaresII\_small.png:pic]]


\item [[two rectangles with diagonals]] \emph{Apr 17, 2019}

[[TwoRectangleswithDiagonals\_small.png:pic]]


\item [[two semi-circles and a rectangle]] \emph{Apr 16, 2019}

[[TwoSemiCirclesandaRectangle\_small.png:pic]]


\item [[semi-circle on a hexagon]] \emph{Apr 14, 2019}

[[SemiCircleonaHexagon\_small.png:pic]]


\item [[divided square]] \emph{Apr 12, 2019}

[[DividedSquare\_small.png:pic]]


\item [[three adjacent triangles]] \emph{Apr 10, 2019}

[[ThreeAdjacentTriangles\_small.png:pic]]


\item [[triangle and circle inside square]] \emph{Apr 7, 2019}

[[TriangleandCircleInsideSquare\_small.png:pic]]


\item [[two squares on a triangle]] \emph{Apr 4, 2019}

[[TwoSquaresonaTriangle\_small.png:pic]]


\item [[square, rectangle, and two semi-circles]] \emph{Apr 3, 2019}

[[SquareRectangleandTwoSemiCircles\_small.png:pic]]


\item [[three triangles and a rectangle inside a circle]] \emph{Mar 30, 2019}

[[ThreeTrianglesandaRectangleInsideaCircle\_small.png:pic]]


\item [[triangle inside a square]] \emph{Mar 26, 2019}

[[TriangleInsideaSquare\_small.png:pic]]


\item [[triangle inside circle and triangle]] \emph{Mar 20, 2019}

[[TriangleInsideCircleandTriangle\_small.png:pic]]


\item [[circle in triangle in square]] \emph{Mar 17, 2019}

[[CircleinTriangleinSquare\_small.png:pic]]


\item [[quarter circles in a square in a circle]] \emph{Mar 16, 2019}

[[QuarterCirclesinaSquareinaCircle\_small.png:pic]]


\item [[triangle overlapping a hexagon]] \emph{Mar 13, 2019}

[[TriangleOverlappingaHexagon\_small.png:pic]]


\item [[two circles in a triangle]] \emph{Mar 10, 2019}

[[TwoCirclesinaTriangle\_small.png:pic]]


\item [[inverse star in a rectangle]] \emph{Mar 7, 2019}

[[InverseStarinaRectangle\_small.png:pic]]


\item [[three overlapping circles]] \emph{Mar 3, 2019}

[[ThreeOverlappingCircles\_small.png:pic]]


\item [[three tilted rectangles]] \emph{Mar 1, 2019}

[[ThreeTiltedRectangles\_small.png:pic]]


\item [[overlapping hexagons]] \emph{Feb 26, 2019}

[[OverlappingHexagons\_small.png:pic]]


\item [[square overlapping a quarter circle]] \emph{Feb 24, 2019}

[[SquareOverlappingaQuarterCircle\_small.png:pic]]


\item [[two hexagons in a rectangle]] \emph{Feb 23, 2019}

[[TwoHexagonsinaRectangle\_small.png:pic]]


\item [[semi-circle in a circle]] \emph{Feb 22, 2019}

[[SemiCircleinaCircle\_small.png:pic]]


\item [[two triangles overlapping a rectangle]] \emph{Feb 21, 2019}

[[TwoTrianglesOverlappingaRectangle\_small.png:pic]]


\item [[square on an octagon]] \emph{Feb 19, 2019}

[[SquareonanOctagon\_small.png:pic]]


\item [[circle and semi-circle in triangle]] \emph{Feb 18, 2019}

[[CircleandSemiCircleinTriangle\_small.png:pic]]


\item [[overlapping triangles]] \emph{Feb 16, 2019}

[[OverlappingTriangles\_small.png:pic]]


\item [[tilted rectangles]] \emph{Feb 13, 2019}

[[TiltedRectangles\_small.png:pic]]


\item [[triangle in semi-circle with square]] \emph{Feb 11, 2019}

[[TriangleinSemiCirclewithSquare\_small.png:pic]]


\item [[circles in overlapping triangles]] \emph{Feb 7, 2019}

[[CirclesinOverlappingTriangles\_small.png:pic]]


\item [[tilted triangles]] \emph{Feb 2, 2019}

[[TiltedTriangles\_small.png:pic]]


\item [[two quarter circles in a square]] \emph{Jan 28, 2019}

[[TwoQuarterCirclesinaSquare\_small.png:pic]]


\item [[two squares and a rectangle in an octagon]] \emph{Jan 26, 2019}

[[TwoSquaresandaRectangleinanOctagon\_small.png:pic]]


\item [[square overlapping a circle]] \emph{Jan 25, 2019}

[[SquareOverlappingaCircle\_small.png:pic]]


\item [[six semi-circles in a circle]] \emph{Jan 21, 2019}

[[SixSemiCirclesinaCircle\_small.png:pic]]


\item [[rectangle on a hexagon]] \emph{Jan 19, 2019}

[[RectangleonaHexagon\_small.png:pic]]


\item [[two squares on a circle]] \emph{Jan 16, 2019}

[[TwoSquaresonaCircle\_small.png:pic]]


\item [[pentagon with two semi-circles]] \emph{Jan 14, 2019}

[[PentagonwithtwoSemiCircles\_small.png:pic]]


\item [[striped hexagon]] \emph{Jan 13, 2019}

[[StripedHexagon\_small.png:pic]]


\item [[circle in a hexagon in a semi-circle]] \emph{Jan 11, 2019}

[[CircleinaHexagoninaSemiCircle\_small.png:pic]]


\item [[overlapping rectangle and semi-circle]] \emph{Jan 5, 2019}

[[OverlappingRectangleandSemiCircle\_small.png:pic]]



\end{enumerate}


\end{document}