ABC is an isosceles triangle, in which AB = AC. Side BA is extended to point D such that AB =...

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.

In the adjoining figure, ABC is an isosceles triangle in which AB = AC. Also, D is a point such that BD = CD. Prove that AD bisects /_ A and /_D

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.

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

In Fig, ABC is an isosceles triangle in which AB= AC.Eis a point on the side CB produced such that FEbotAC . If ADbotCB , prove that AB xx EF = AD xx EC .

In the adjoining figure, ABC is an isosceles triangle in which AB = AC. If E and F be the midpoints of AC and AB respectively, then