Which polygon has 4 sides?

The polygon with four sides is known as a quadrilateral. By definition, a quadrilateral is a closed geometric figure made up of four line segments, which are the sides of the polygon. The angles in a quadrilateral can vary, and there are various types of quadrilaterals, including rectangles, squares, trapezoids, and rhombuses, all of which fit the criteria of having four sides.

In contrast, a triangle has three sides, making it a different type of polygon entirely. A pentagon consists of five sides, and a hexagon has six sides. Understanding these definitions is key to identifying polygons based on the number of their sides.