1/7
Looks like no tags are added yet.

Alternate segment theorem

Angles in the same segment are equal

Opposite angles in a cyclic quadrilateral add up to 180

Angle at the centre is twice the angle at the circumference

Angle in a semicircle, subtended by the diameter is 90

Tangent and radius meet at 90 degrees

Tangents that meet are equal

2 radius make an isosceles triangle