Answer
A two-dimensional figure, also called a plane or planar figure, is a set of line segments or sides and curve segments or arcs, all lying in a single plane. The sides and arcs are called the edges of the figure. The edges are one-dimensional, but they lie in the plane, which is two-dimensional.
The triangle, the pentagon, the hexagon and the circle are just a few plane figures.
Prisms and pyramids, for instance, are three-dime nsion figures.
Angles
Plane shapes
Solids
In this section, we will talk about plane figures, which are formed with coplanar (on the same plane) points joined together. When planes run into each other, the intersect. The line produced in between is called the line of intersection.
Contents
1 Plane figures
2 Triangles
3 Quadrilaterals
4 Other polygons
5 Circles and