A triangle with all sides equal is called an equilateral triangle, and a triangle with no sides equal is called a scalene triangle. An equilateral triangle is therefore a special case of an isosceles triangle having not just two, but all three sides and angles equal. ... The triangles are therefore perspective triangles.

Are all triangles equal?

Congruent triangles have corresponding sides of equal length and corresponding angles of equal measure. They are the same exact size and shape. is equilateral and is isosceles, so they are not the same exact shape. ... All congruent triangles are similar, but these triangles are not congruent.

Are three sides of a triangle always equal?

Triangles ALWAYS have 3 sides. The interior angles of a triangle add up to 180 degrees. Here are the triangles you are expected to know about: Equilateral Triangle.