The perimeter of an isosceles triangle is 68 cm, the lateral side is 20 cm, find the base.
| September 4, 2021 | education
Since the perimeter of an isosceles triangle consists of the length of its three sides, where 2 of them are 20 cm each, we find the third side by subtracting two lateral sides from the perimeter of the triangle:
68 – 20 – 20 = 68 – 40 = 28.
Answer: the base of the triangle is 28 cm.
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