Question

Shivkumar Shivkumar's image
Shivkumar Shivkumar
Dec. 23, 2016, 11:10 a.m.

 in question 5 of ex 8.1 cant we prove it like this first if we want to prove that it is a parallogram so we can say - OD=OB, OA =OC , angleDOC = angle AOB , by SAS COGUENCY we can say AD=BC and similarly  we prove that DC=AB  is it correct or not