What else would need to be congruent to show that triangle abc is congruent to triangle def by asa?

Option D. ∠B ≅ ∠E

Step-by-step explanation:

In ΔABC and ΔDEF,

Measure of side AB = Measure of side DE = 10 units

∠A ≅ ∠ D ≅ 45°

Now we have to prove ΔABC ≅ ΔDEF by the property of congruence ASA.

Since one angle and one side are equal.

So other angle based on sides AB and DE will be the adjacent angles ∠B and ∠E

Therefore, Option D. ∠B ≅ ∠E will be the answer.

what i would say the best answer is a. 40.5