`Delta ABC` is an isosceles triangle in which AB = AC. Side BA is produced to D such that AD = AB. Show that BCD is a right angle.

DeltaABC is an isoscelestriangle in which AB = AC. Side BA is produced to D such that AD = AB. Show that angleBCD is a right angle (see Fig. ).

DeltaABC is an isoscelestriangle in which AB = AC. Side BA is produced to D such that AD = AB. Show that angleBCD is a right angle (see Fig. ).

triangleABC is an isosceles triangle in which AB= AC. Side BA is produced to D such that AD = AB. Show that angleBCD is a right angle.

DeltaABC is an isosceles triangle with AB = AC. Side BA is produced to D such that AB = AD. Prove that angleBCD is a right angle.

DeltaABC is an isosceles triangle in which AB = AC. Side BA is produced to D such that AD = AB (see figure). Show that /_BCD is a right angle.

DeltaABC is an isosceles triangle in which AB = AC. Side BA is produced to D such that AD = AB (see figure). Show that /_BCD is a right angle.

abc is an isosceles triangle with AB=AC . Side BA is produced to D such that AB=AD. Prove that /_BCD is a right angle

DeltaABC is an isosceles triangle with AB=AC , side BA is produced to D such that AB=AD. Prove that angleBCD is a right angle.

Delta ABC 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.