In maths, 2D shapes can be defined as plane figures that can be drawn on a flat (or plane) surface or a piece of paper.

All the 2D shapes have various parameters such as area and perimeter.

Some of the 2D shapes contain sides and corners, whereas some have curved boundaries.

Explanation: The basic types of 2D shapes are a circle, triangle, square, rectangle, pentagon, quadrilateral, hexagon, octagon, etc.