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helpfulAnswer:
We must know that ∠ACB = ∠ACD to prove the triangles are congruent by SAS.Step-by-step explanation:
In the given figure, given that :
In ∆ ABC and ∆ACD,
Side AC is common (Side)
BC = DC (Given side)
So, we need one corresponding angle between these two sides to be equal, i.e, ∠ACB = ∠ACD . Then it follows the SAS property of congruency.
Thus,
We must know that ∠ACB = ∠ACD to prove the triangles are congruent by SAS.
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