What Shape has 4 sides? 

Solution:

Four-sided closed shape is generally called quadrilaterals and there are many types of quadrilaterals The most common ones are square, rectangle,rhombus, kite, trapezoid, etc 

Thus, Quadrilateral  is a shape that has 4 sides and there are many types of quadrilaterals like square, rectangle etc 

What Shape has 4 sides? 

Summary:

4 sided closed shape is called a quadrilateral.