Basic Terms of a circle

Theorem 1

Theorem 2

Theorem 3 & 4

Theorem 5

Example Theorem 5

Theorem 6 & 7

Example Theorem 6

Theorem 8

Theorem 9

Theorem 10

Example 1

Example 2

Example 3

Example 4

Example 5

Example 6

Example 7

Advanced Example 1

Advanced Example 2

What is Cyclic Quadrilateral ?

Example Cyclic Quadrilateral