in a polygon, a segment that connects nonconsecutive vertices of the polygon
a trapezoid in which the legs are congruent, both pairs of base angles are congruent, and the diagonals are congruent
a quadrilateral with exactly two distinct pairs of adjacent congruent sides
in a trapezoid, the segment that joins the midpoints of the legs
a quadrilateral with parallel opposite sides. Any side of a parallelogram may be called a base
a quadrilateral with four right angles
a quadrilateral with all four sides congruent
a quadrilateral with four right angles and four congruent sides
a quadrilateral with exactly one pair of parallel sides. The parallel sides of a trapezoid are called bases. The nonparallel sides are called legs. The pairs of angles with their vertices at the end points of the same base are called base angles.
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