A trapezoid can have 2 right angles, 1 acute angle and 1 obtuse angle that all add up to 360 degrees.
This shape has only one pair of opposite sides and no right angles: <
A shape with no right angles and one pair of parallel lines would be called a trapezoid in the USA, and a trapezium in Britain.
trapezoid
A right trapezium.
A shape that has exactly 4 sides, 2 right angles and one pair of parallel sides is a rectangle. ~T
trapezoid
square
A trapezium (has only one pair of unequal parallel lines).
A trapezium (trapezoid).
Rhombus
A shape that has one pair of equal opposite angles is a parallelogram. In a parallelogram, opposite angles are equal, and consecutive angles are supplementary. This property is true for all types of parallelograms, including rectangles and rhombuses.
A quadrilateral with only one set of perpendicular sides is typically a right trapezoid or right kite. In a right trapezoid, one pair of opposite sides is parallel, and the non-parallel sides meet at right angles. In a right kite, two pairs of adjacent sides are equal, and one pair of opposite angles is equal, with one set of sides meeting at right angles.