The perimeter of an isosceles triangle is 10.2 cm. Find its base if the side is 3 cm.
| December 1, 2020 | education
1) If the triangle is isosceles, then the sides are equal
2) to find the base, subtract two equal sides from the perimeter
3) 10.2-3-3 = 4.2 (cm) – base length
Answer: the base is 4.2 cm
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