A right trapezoid has exactly one pair of perpendicular lines and is a quadrilateral.
a hexagon
The question contradicts itself. A dodecagon need not have any perpendicular sides.
If both pairs of opposite sides are parallel: A Rectangle, or a Square. If exactly one pair of opposite sides are parallel: An Isosceles Trapezoid. If it does not have parallel sides and one diagonal is the perpendicular bisector of the other: A Kite It is also possible that it does not have any parallel sides and neither diagonal is the perpendicular bisector of the other: A quadrilateral
Then, the opposite sides are congruent.
trapezium
A quadrilateral that has only one pair of parallel sides (the other pair not parallel) is a trapezium.
a trapezoid is the only quadrilateral that has exactly 1 pair f parallel sides.
No, a parallellogram is a quadrilateral with two pair of congruent sides and a trapezoid is a quadrilateral with only one pair of congruent sides.
There is no quadrilateral on that list that has only 1 pair of parallel sides.
A right trapezoid has exactly one pair of perpendicular lines and is a quadrilateral.
Yes, a trapezoid is a quadrilateral with only one pair of parallel sides.
A quadrilateral with only one pair of parallel sides is a trapezoid.
A trapezoid
a hexagon
A trapezoid ..
A trapezoid