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What additional information is needed to prove the triangles are congruent by the SAS postulate

What additional information is needed to prove the triangles are congruent by the-example-1

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Answer:
\angle XWY \cong \angle ZWY

Explanation:

We know that
\overline{WY} \cong \overline{WY} by the reflexive property, so we need the included angles to be congruent (meaning
\angle XWY \cong \angle ZWY

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