A triangle where all the angles are equal is called what?

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Multiple Choice

A triangle where all the angles are equal is called what?

Explanation:
Having all angles equal means the triangle is equiangular. In any triangle the angles sum to 180 degrees, so each angle must be 60 degrees. When a triangle has equal angles, the sides opposite those angles are equal as well, so all three sides are the same length. That’s why an equiangular triangle is also equilateral. The other terms describe different properties: an isosceles triangle has two equal sides, a right triangle has a 90-degree angle, and a scalene triangle has no equal sides (and thus no equal angles).

Having all angles equal means the triangle is equiangular. In any triangle the angles sum to 180 degrees, so each angle must be 60 degrees. When a triangle has equal angles, the sides opposite those angles are equal as well, so all three sides are the same length. That’s why an equiangular triangle is also equilateral. The other terms describe different properties: an isosceles triangle has two equal sides, a right triangle has a 90-degree angle, and a scalene triangle has no equal sides (and thus no equal angles).

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