Isosceles Triangles:

An isosceles triangle is a triangle in which two of its sides and angles are equal. An isosceles triangle can be an equilateral triangle but an equilateral triangle cannot be an isosceles triangle.

Right Triangles:

A right triangle is a triangle that has one 90° angle.

Equilateral Triangles:

An equilateral triangle is a triangle with equal sides and angles. All angles in an equilateral triangle are 60°.