A plane is a flat, two dimensinal surface. A 2d shape is a geometrical figure that can be laid on a plane. Some of the basic 2d shapes are rectangle, square, circle, triangle etc. They can also be termed as flat plan geometrical shapes. They can have a number of sides. This plane geometry section consists a list of calculators that are related with 2-dimensional figures and it will help you to find the area, perimeter, length etc of the the two dimensional shapes.
The 2d shapes are plane geometric figures that has area, but they do not have any thickness. The two dimensional shapes that are formed with lines are termed as polygons.
