A parallelogram.
rectangle
a rhombus
A parallelogram.
A four-sided shape with two pairs of parallel sides is a parallelogram. But if it has at least one right angle, then it has to have four right angles... which makes it a rectangle.
A right angle triangle has no parallel sides
a square
rhombus
a rhombus
A sqare two pairs of parallel sides each corner is a right angle and all sides are equal.
I am a rectangle
a square