Polygon
If it has only 4 sides in total, then it's a parallelogram.I think any figure with more than 4 sides can have two sets of parallel sides.
No plane figure has four vertices unless it has four sides.
4
A plane figure with 4 unequal sides is a quadralateral.
trapezium
square
A square.
A sguar.
it is a plane and closed figure it has 4 corners and sides all the sides are equal
a group of 4 sided shapes is called a quidrilatriel
It is a quadrilateral shape that has 4 sides