Equilateral triangles are triangles in which all three sides are equal. Since all the sides are equal, all the angles are also equal. All
three angles in an equilateral triangle measure 60 degrees, regardless of the lengths of sides.
A right triangle is a triangle with a right angle. Every right triangle has exactly two acute angles. The sides opposite the acute
angles are called the legs. The side opposite the right angle is called the hypotenuse. Since it’s opposite the largest angle, the
hypotenuse is the longest side of a right triangle.