abcd is a parallelogram.if the line joining the mid-point of side bc to vertex a bisects angle a,then prove that bisector of angle b also bisects ad

Question

abcd is a parallelogram.if the line joining the mid-point of side bc to vertex a bisects angle a,then prove that bisector of angle b also bisects ad​

Hint 
Consider BG as the angle bisector of B that meets AD at G. Now, you have to prove that G is the mid point of AD.

oobleck · Answer

I answered this for you two days ago. see the related questions below.

abcd is a parallelogram.if the line joining the mid-point of side bc to vertex a bisects angle a,then prove that bisector of angle b also bisects ad​