The length of boundary of a triangle is defined perimeter of a triangle.
The boundary of a triangle is the perimeter of a triangle but its boundary is formed by three line segments. Therefore, the boundary of a triangle is equal to the total of lengths of all three sides.
Consider triangle . It is having sides , and , and their lengths are , and respectively. Perimeter of a triangle is the total of lengths of all three sides. So, it can be expressed in a mathematical form.
According to ,
Perimeter of the triangle can be calculated now by substituting the lengths of the sides in the above formula.
Perimeter of Length of the side Length of the side Length of the side
Therefore, the perimeter of the triangle is . Use this method to calculate the perimeter of any triangle in mathematical system.