Important theorems for circle. The properties of processes provide an understanding of angles generated in the coils. Here are the 8 theorems

• Alternate segment circle theorem.
• The angle at the centre circle theorem.
• Angles in the same segment circle theorem.
• Angle in a semi-circle theorem.
• Chord circle theorem.
• Tangent circle theorem.
• Cyclic quadrilateral circle theorem.

 A bit of history of the Circle of Theorems
First Theorem was discovered by Thales around d650BC in the Book III of Euclid.