Maths Dictionary · SS 2
Cyclic quadrilateral
Simple meaning
A four-sided shape whose four corners all lie on a circle. Its opposite angles add up to 180°.
Example
If one angle is 100°, the angle opposite is 80°.
See it
From the Cyclic Quadrilaterals lesson. Try moving things around.
∠A 75° + ∠C 105° = 180° · ∠B 85° + ∠D 95° = 180°