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 trapezoid (or trapezium in some regions) has one pair of parallel sides and typically does not have any right angles. The non-parallel sides can be of different lengths and angles, which allows for various trapezoid shapes. This characteristic distinguishes it from rectangles, which have right angles.
A trapezium (has only one pair of unequal parallel lines).
A trapezium (trapezoid).
Rhombus
The shape that has only one set of parallel sides and two right angles is a trapezoid (or trapezium in some regions). In this case, it specifically refers to a right trapezoid, which has two right angles. The other two angles can be acute or obtuse, but the defining feature is the single pair of parallel sides.