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Proving Congruent Triangles

Proving Congruent Triangles 1.5 - Solution

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We are given a diagram and are asked what other information, if any, we need to prove that the two triangles are congruent by SAS. The given diagram shows that and that

To prove that by SAS, we must have two pairs of congruent sides and congruent included angles. We only have one pair of congruent sides and congruent angles. Therefore, we are missing one pair of congruent sides. Since congruent angles have to be included by congruent sides, we need