A circle is inscribed in the trapezoid, the sum of the lengths of the sides of which is 18. Find the length of the midline of the trapezoid

bystudin | May 31, 2020 | Education

By the second property of the quadrilateral: AB + CD = BC + AD = 18
By definition of the midline of the trapezoid: m = (BC + AD) / 2 = 18/2 = 9
Answer: m = 9

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