The lateral side AB of an isosceles triangle ABC is twice as long as the base of AC
| May 17, 2021 | education
The lateral side AB of an isosceles triangle ABC is twice as long as the base of AC. Calculate the lengths of the sides of the triangle if its perimeter is 87 cm.
1. The length of the base of a triangle is x centimeters.
2. Lateral side x * 2 = 2x centimeters.
3. Let’s make an equation and find the length of the base.
2x + 2x + x = 87;
5x = 87;
x = 87/5 = 17.4;
Answer: The length of the base of an isosceles triangle is x = 17.4 centimeters. The length of each of the lateral sides is 2 * 17.4 = 34.8 centimeters.
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