Geography, 05.03.2021 03:30 jchavez0790
Given: In triangle ABC, ∠B ≅ ∠C
Prove: AB ≅ ACTriangle A B C is shown. Angles A B C and B C A are congruent.
Complete the paragraph proof.
We are given that ∠B ≅ ∠C. Assume segment AB is not congruent to
✔ segment AC
.
If AB > AC, then m∠C > m∠B by the
✔ converse of the triangle parts relationship theorem
. If AB < AC, then m∠C < m∠B by the converse of the triangle parts relationship theorem.
But by the definition of congruent, we know the measure of angle B equals the measure of
✔ angle C
by the given statement. Therefore, we have a contradiction: AB = AC, and AB ≅ AC.
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