Triangle A has different angle measurements from the other two triangles so they aren't congruent.
What is the congruent triangle?
Two triangles are said to be congruent if the length of the sides is equal, a measure of the angles are equal and they can be superimposed.
Two of these three triangles are congruent. We have to choose the triangle that is not congruent.
Triangle B and triangle C are congruent to each other except for triangle A.
Triangle A has different angle measurements from the other two triangles so they aren't congruent.
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