A trapezoid is a quadrilateral as it has 4 sides. An Isosceles trapezoid has parallel bases.The legs of an Isosceles trapezoid are congruent, the lower base angles are congruent and the upper base angles are also congruent. The diagonals are also congruent.
Let's use a diagram to represent the Isosceles trapezoid.
ABCD is an Isosceles trapezoid with the bases AB and CD. Therefore,
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