Question

Class 9 chapter 7
Please tell me fast my dear friends... ​

Answer 1

in triangle AOC & DOB

ZAOC = ZDOB ( opposite angles)

AO = BO (GIVEN)

OC = OD (GIVEN)

by SAS congruency rule the both the triangles are congruent.

therefore AC = BD (C.P.C.T)

hence proved !!!