The perimeter of an isosceles triangle is 25 cm, the difference between the two sides is 4 cm

The perimeter of an isosceles triangle is 25 cm, the difference between the two sides is 4 cm, and one of its outer corners is sharp. Find the sides of the triangle.

1. Lateral side of an isosceles triangle x centimeters.

2. Let’s determine the size of its base.

(25 – x * 2) = (25 – 2x) centimeters.

3. Let’s compose the equation.

25 – 2x – x = 4;

25 – 4 = 2x + x;

21 = 3x;

x = 21/3 = 7;

x = 7;

Answer: Side x = 7 centimeters. Base 25 – 2x = 25 – 2 * 7 = 11 centimeters.