In geometry a plane is flat 2D surface which has no thickness which goes forever in both the directions. Plane geometry is all about shapes which can be easily drawn on a piece of paper, like – points, lines, circles, squares etc. Objects which lie in the same plane are called co-planar.

Plane Geometry covers the following:

- Quadrilaterals.
- Polygon.
- 2D shapes.
- Angles

## Origin of Plane Geometry

Most of the geometry comes from Greek. Euclid was a Greek
mathematician also referred as the ** âfounder of geometryâ** or

**Euclid made a great contribution to mathematics with his book â**

*âfather of geometryâ.***His work is marked as one of the most influential work in the field of mathematics.**

*Elementâ.*## What is a Point, Line and a Ray?

**Point:** It is
defined as a particular or precise location on a piece of paper or a plane
surface, represented by a dot.

**Line: **A line can
be said a combination of infinite points together. It extends in both the
directions.

**Ray: **When a line
has starting point and no end point it is called as ray.