**POINT**

In geometry a point is represented by a dot. It has no size i.e. no width, no length and no depth. It just denotes a location.

**LINE**

A line is defined as a line of points that extends infinitely in two directions. It has one dimension, length. It is defined by two points and written as shown below with an arrowhead

**COLLINEAR POINTS**

Points that are on the same line are called collinear points.

- Two lines that meet at a point are called intersecting lines.

A line segment is the segment between A and B as shown below.

A space extends infinitely in all directions and is a set of all points in three dimensions.

Consider an example of a box. Now you can imagine in the space inside the box.

**RAY**:

A **Ray,** is a line with an endpoint that extends infinitely in one direction. One of the most obvious examples is a sun's ray of light in space.