Circle theorems - pictures to learn the theorems

for GCSE Edexcel maths Higher tier but could probably be used for foundation tier as well

Alternate segment theorem

The angle at the centre is twice the angle at the circumference

Angles in the same segment are equal.

The angle in a semicircle is 90 degrees.

The angle between a tangent and a radius is 90 degrees. Tangents which meet at the same point are equal in length.

The opposite angles in a cyclic quadrilateral total 180 degrees.

The perpendicular from the centre of a circle to a chord bisects the chord