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

See Also

• Isosceles triangle