A triangle is an important necessary measure  in geometry with three sides, three heights and three angles . They occur in several shapes, each with plots that take part an important function in geometry. The sum of the inside angles of a triangle is equal to 180 degrees which is known as the angle sum property of a triangle. If PQR is a triangle, then it is presented as triangle PQR where P, Q and R are the heights of the triangle. A triangle is a two dimensional form that appears as three opposite points on an exotic flat surface.