Perimeter of isosceles treugs. is 32cm, and one of its sides is 18cm. Find the other two sides.

Solving the problem.
1. Let’s denote the lateral side of an isosceles triangle by x.
2. Let’s compose and solve the equation.
x + x + 18 = 32;
2x + 18 = 32;
2x = 32 – 18;
2x = 14;
x = 14/2;
x = 7.
3. The sides of an isosceles triangle are equal in x = 7 cm.
Answer: the sides of an isosceles triangle are 7 cm each.

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