Parts of a Circle

Radius, Diameter, Circumference

Radii & Sectors

Chords & Segments

Tangents

Symmetry Properties of Circle

Perpendicular Bisector of Chord

Equal Chords & Perpendicular Bisectors

Tangents from a point & angle between them.

Angle Properties of Circle

Angle at the center & angle at the circumference

Angle inside same segment

Angle inside a semicircle

Opposite angles of a cyclic quadrilateral

Angle between radius and tangent