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Mathematics, 04.02.2021 19:40 kehlani315242

An exterior angle of a triangle is formed by extending one side of a triangle. There are two exterior angles at each vertex of a triangle, as shown for ZXY in the figures at the right. Why are the two exterior angles at the same vertex congruent?


An exterior angle of a triangle is formed by extending one side of a triangle. There are two exteri

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