Question

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.

Answer 1

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.