A quadrilateral is the name given to any 4 sided polygon.
a square.
Well, you are supposed to call an irregular quadrilateral an IRREGULAR QUADRILATERAL. Haha. There really isn't any name for a regular quadrilateral. You just call it a quadrilateral or whatever the shape is. You could call it a REGULAR QUADRILATERAL.
i think you call it a irregular quadrilateral
Quadrilaterals usually have special names only if they DO have parallel sides, or some other special property. You might just call it "quadrilateral", or "a quadrilateral with no parallel sides".
Not usually,
A square
A quadrilateral.
A quadrilateral
quadrilateral
a rectangle
Because they have 4 sides.
quadrilateral