A quadrilateral has four sides & no other special properties.
Any given side has two adjacent sides and one opposite side. There are two pairs of opposite sides.
A parallelogram is a quadrilateral where both pairs of opposite sides are parallel to each other.
Rectangles (including squares) are parallelograms.
Rhombi (including squares) are parallelograms.
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Some are, and some are not. A parallelogram is a special kind of quadrilateral ... one in which every side is parallel to the one across from it. So all parallelograms are quadrilaterals, but there are also a lot of other quadrilaterals that are not parallelograms.
Yes because all parallelograms have four sides. But the opposite is not true. There are some quadrilaterals that aren't parallelograms.
Parallelograms!
No but they are all quadrilaterals
They are quadrilaterals; opposite sides are parallel.