Lesson 1 : Angles and arcs in circle.

Lesson 2 : the relation between central angle and inscribed angle subtended by same arc and arcs in circle.

Lesson 3 : corollaries and well known problems.

Lesson 4 : The relation between inscribed angles subtended by same arc

Lesson 5 : The Cyclic quadrilateral.

Lesson 6 : Properties of The Cyclic quadrilateral.

Lesson 7 : Converse of the Properties of The Cyclic quadrilateral.

Lesson 8 : the relation between tangents of the circle

Lesson 9 : The angle of tangency.