DABC is an isosceles triangle in which `A B= A C`. Side BA is produced to D such that `A D = A B`
Channel: Doubtnut
Date: 2020-07-05

DABC is an isosceles triangle in which `A B= A C`. Side BA is produced to D such that `A D = A B`(see Fig. 7.34). Show that `/_B C D`is a right angle.