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Shannon said that a triangle with exactly 2 congruent sides and an obtuse angle is an equilateral obtuse triangle. Describe her error.

**UPDATE** I answered the question. It can't be both equilateral and obtuse be equilateral has to be less than 90 degrees. And obtuse is more than 90 degrees. 

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autumntart
acute is less than 90 not equilateral. but all of the angles must be the same in an equilateral. One triangle can only be 180 degrees. so you can have a obtuse equilateral.

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