Hey there! I would like some help please :) Thanks!

Mathematics

1 answer:

Alchen [17]3 years ago

3 0

AC is a common side, ∠ACD = ∠ACB and CD = BC ⇒ ΔACD and ΔABC <span>are congruent (SAS definition).

</span>Congruent triangles have exactly the same three angles, so ∠D = ∠B.<span>

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