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Mathematics 10 Online
OpenStudy (anonymous):

13. Explain how proving two triangles congruent can help prove parts of the triangle congruent. (3 points) 14. Your friend claims isosceles triangles are congruent if two corresponding sides are congruent. He explains there are only two different lengths of sides, so the third side must always be congruent. Explain the error in his reasoning. (3 points)

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