Question

Plzz help to solve 11 question

Answer 1

hope it helps............

Answer 2

in triangle∆ OPQ and∆OCR
AS OP//AC Produce
angle C=angle p ( corresponding angle)
angle Q=angleA
as triangle is equilateral A=C
angle R=Q( alternate angle)
angle angleO=O vertically opposite angle
hence all three angle of ∆OPQ=all angles∆OCR
hence both are equilateral triangles
hence the proof