What is the Triangle?
In geometry, a triangle is a type of polygon which have three sides. All the triangle sides may be the same or maybe not, it depends on the triangle types.
Perimeter of a Triangle
The perimeter of a triangle is the addition of all its three sides.
Perimeter of a triangle = Addition of all three sides
Perimeter of triangle formula
Let a, b and c are the three sides of the triangle, therefore
Perimeter (P)= a + b + c
Solved Examples of Perimeter of a Triangle
Example 1: Determine the perimeter of a triangle whose sides are 6 cm, 8 cm, and 2 cm.
a = 6 cm
b = 8 cm
c = 2 cm
Perimeter of a triangle = Sum of all sides = a + b + c = 6 + 8 + 2 = 16
So, the answer is 16 cm.
Example 2: Determine the perimeter of a triangle whose each length is 5 m.
Solution: Since according to the question all 3 sides are equal in length. This is called an equilateral triangle.
So a = b = c = 5 m
Perimeter of a triangle = a + b + c
= 5 + 5 + 5
Perimeter = 15 m.