In trapezoid ABCD, the larger base is 20 cm. M-mid AB, N-mid CD, MN = 16 cm. Find BC.

univerkov | September 6, 2021 | education

According to the formula, the length of the midline of the trapezoid is equal to half the sum of the lengths of its bases.

MN = (BC + AD) / 2.

(BC + AD) = 2 * MN.

BC = 2 * MN – AD = 2 * 16 – 20 = 12 cm.

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