Internal Angle bisector Theorem

Internal Angle bisector Theorem 

The internal bisector of an angle of a triangle divides the opposite side internally in the ratio of the sides containing the angle.

If ∠BAD=∠CAD

then 
BD/CD = AB/AC

 Converse of Internal Angle Bisector Theorem

If a line through one vertex of a triangle divides the opposite sides in the ratio of other two sides, then the line bisects the angle at the vertex. 

If BD/CD = AB/AC
then 

∠BAD=∠CAD 

PS : Proof of these theorems is coming soon.

⭐ Question Based on Internal Angle Bisector Theorem