A triangle with three equal sides and three equal angles of 60 degrees is called

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Multiple Choice

A triangle with three equal sides and three equal angles of 60 degrees is called

Explanation:
When a triangle has all three sides equal, the angles opposite those sides are also equal. Since the angle sum in any triangle is 180 degrees, three equal angles must each be 180/3 = 60 degrees. A triangle with all sides equal and all angles 60 degrees is called equilateral. The other types don’t fit: an isosceles has two equal sides (and two equal angles), a scalene has all sides different, and a right triangle has a 90-degree angle.

When a triangle has all three sides equal, the angles opposite those sides are also equal. Since the angle sum in any triangle is 180 degrees, three equal angles must each be 180/3 = 60 degrees. A triangle with all sides equal and all angles 60 degrees is called equilateral. The other types don’t fit: an isosceles has two equal sides (and two equal angles), a scalene has all sides different, and a right triangle has a 90-degree angle.

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