Question 6 ΔABC is an isosceles triangle in which AB = AC. Side BA is produced to D such that AD = AB (see the given figure). Show that ∠ BCD is a right angle.

Question 6 ΔABC is an isosceles triangle in which AB = AC. Side BA is

1.	Question 6 ΔABC is an isosceles triangle in which AB = AC. Side BA is produced to D such that AD = AB (see the given figure). Show that ∠ BCD is a right angle.
Answer» Question 6 $Δ A B C$ is an isosceles triangle in which AB = AC. Side BA is produced to D such that AD = AB (see the given figure). Show that $∠ B C D$ is a right angle.