Question

HELP ASAP

Given: ABCD is a parallelogram and ABC is a right angle.
Prove: BD is congruent to AC.

Answer 1

ABC is a right angle

ABCD is a parallelogram

Opposite sides of a parallelogram are equal

So

• BC=AD
• AB=DC

Opposite angles are equal

<B=<D

Hence

∆ABC and ∆CDB are congruent by SAS

• BD=AC