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In the isosceles trapezoid shown above lengths of non parallel side AD and BC are equal to c. Also the base angle A is equal to base angle B.

PQ = 5 cm, QR = 3 cm, RS = 2 cm, SP = 3 cm

Sides PQ and RS are parallel sides. Is the given trapezoid an isosceles trapezoid? Give reasons for your answer.

The length of the two non – parallel sides is given to be equal to 3 cm. This shows that the given trapezoid is an

isosceles trapezoid.

angle D = 62 degree, angle E = 68 degree, angle F = 110 degree, angle G = 120 degree If angles D and E are the

angles between the lower base and the two non – parallel sides, is the trapezoid isosceles or not?

trapezoid.