Question

Prove that tangent drawn at the end of the diagram of circle parallel

Answer 1

draw a circle and O is the mid point and AB is the diameter and PQ and R S is the tangent of the circle ........... Angel A is 90° and B is also 90° ........... you prove that the angel is 180° interior angel
A is 1
B is 2
1= 90 °
2=90°
1+2=90+90
AB =180°