The perimeter of an isosceles triangle is 12 cm and the side is 5 cm. Find the base.

We know that the perimeter of an isosceles triangle is 12 cm, and the side is 5 cm. In order to find the length of the base, we compose and solve a linear equation.
Let’s remember the definition of an isosceles triangle. An isosceles triangle is a triangle in which the two sides are equal.
To find the perimeter of an isosceles triangle, we will use the formula:
P = 2a + b, where a is the side of the triangle and b is the base of the triangle.
5 * 2 + x = 12;
10 + x = 12;
x = 12 – 10;
x = 2 cm base of the triangle.