Home ΔABC is an isosceles triangle with AB=AC side BA is produced to D such that AB=AD.Prove that ㄥBCD is a right angle. ΔABC is an isosceles triangle with AB=AC side BA is produced to D such that AB=AD.Prove that ㄥBCD is a right angle. Er Chandra Bhushan October 20, 2022 0 Newer Older