Quadrilaterals are four-sided figures. So are squares.
All four-sided figures are quadrilaterals.
There are none to be seen but if you meant 4 sided figures then they are quadrilaterals
All 4 sided polygons are quadrilaterals such as a square, rectangle, parallelogram, rhombus, kite ... etc
Quadrilaterals are 4 sided shapes such as a square, a rectangle, a rhombus, a parallelogram, a kite ... etc
yes they are all four sided figures classifying them as quadrilaterals
None. The only common property of quadrilaterals is that they are plane figures that are bounded by four straight sides, and that they have four vertices. So far all quadrilaterals are candidates for the answer. But then with each quadrilateral you get some unique property that is not shared by others so NO quadrilateral has all te properties of all the other quadrilaterals.
Yes, you may think of "closed figure" as part of the definition of a quadrilateral.
All kites are quadrilaterals, but quadrilaterals are not kites.
All squares are quadrilaterals. Not all quadrilaterals are squares.
All parallelograms are quadrilaterals but all quadrilaterals are not necessarily parallelograms