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Math Help - Triangle proof

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    Triangle proof

    If I am told that triangle CDE is isosceles, and a picture that tells me that CD is congruent to ED, Can I conclude angle C = angle E to the def of isosceles triangles
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    Quote Originally Posted by IDontunderstand View Post
    If I am told that triangle CDE is isosceles, and a picture that tells me that CD is congruent to ED, Can I conclude angle C = angle E to the def of isosceles triangles
    You can conclude that, but it's not for the reason you stated. The theorem you want to reference is :

    "If two sides of a triangle are congruent, then the angles opposite those sides are congruent."
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