# Angle at the Circumference is half the Angle at the Centre +-- {.image} [[AngleAtCircumference.png:pic]] =-- Consider a [[circle]] with a [[chord]] drawn inside it. Join the two ends of the chord to the centre of the circle and to a point on the circumference. Then the angle formed at the centre of the circle is twice the angle at the circumference. category: circle theorems [[!redirects angle at the circumference is half the angle at the centre]] [[!redirects angle at the centre is twice the angle at the circumference]] [[!redirects angle at centre is twice angle at circumference]] [[!redirects angle at the centre is twice the angle at the circumference]] [[!redirects angle on the circumference is half the angle at the centre]] [[!redirects angle on the circumference]]