Quadrilateral ABCD is circumscribed about a circle. find the sides BC and AD, if AB = 7 cm, CB = 11 cm, BC is 2 times less than AD.

univerkov | December 7, 2020 | education

if the quadrilateral is circumscribed about a circle, then the sums of the opposite sides are equal. we have AB + CD = BC + AD if BC.

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