A general quadrilateral.
rectangles squares
a rectangle
Rectangle.
quadrilateral
A rectangle is a plane figure with four straight sides and four right angles, esp. one with unequal adjacent sides. A square is a plane figure with four equal straight sides and four right angles. A rhombus is a parallelogram with opposite equal acute angles, opposite equal obtuse angles, and four equal sides.
A rectangle
It is a Rhombus.
square or rhombus
If one set of opposite sides is equal and parallel then both are. The figure is a PARALLELOGRAM and the opposite angles of course must be equal.(see related links below)Parallelograms include rectangles (four right angles) and rhomboids (two opposite acute angles and two opposite obtuse angles).A square is a type of rectangle (all sides equal).A rhombus is a type of rhomboid (all sides equal).Although a square could be considered an equiangular rhombus, it is usually considered a separate type of shape.
A rhombus is a 4 equal sided quadrilateral with opposite parallel sides and equal opposite acute angles and equal opposite obtuse angles that all add up to 360 degrees.
Rectangle
A parallelogram has opposite sides and angles congruent which means of equal measure.