Isosceles trapezoid
From AoPSWiki
An isosceles trapezoid is a geometric figure that lies in a plane. It is a specific type of trapezoid in which the legs have the same length. Its properties include:
- congruent diagonals
- 2 pairs of congruent angles
- one pair of congruent sides
- opposite angles are supplementary
- the segment joining the midpoints of the bases is perpendicular to the bases
- properties of a trapezoid
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