# math

posted by
**mathsen**
.

In a quadrilateral ABCD, the diagonal AC bisects angle BAD and AB = BC = CD. Prove that the other diagonal, BD, bisects angle ADC.

posted by
**mathsen**
.

In a quadrilateral ABCD, the diagonal AC bisects angle BAD and AB = BC = CD. Prove that the other diagonal, BD, bisects angle ADC.