In an isosceles triangle ABC, the height BD is 8cm, and the base of the AC is 12cm. Find the length of the side.
August 28, 2021 | education
| BDC triangle (angle D = 90 °).
DC = AC / 2
DC = 6
By the Pythagorean theorem, we find BC.
BC ^ 2 = BD ^ 2 + DC ^ 2
BC ^ 2 = 64 + 36
BC = 10
Answer: the side is 10 cm.
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