In a ∆ABC, D is the mid-point of AC such that BD = 12 AC. Show that ∠ABC is a right angle.

In a ∆ABC, D is the mid-point of AC such that BD = 12 AC. Show that

1.	In a ∆ABC, D is the mid-point of AC such that BD = 12 AC. Show that ∠ABC is a right angle.
Answer» In a ∆ABC, D is the mid-point of AC such that BD = $\frac{1}{2}$ AC. Show that ∠ABC is a right angle.