Building Blocks

The Building Blocks of Geometry: Point, Line and Plane
Like algebra, geometry has its own special vocabulary. Let's see:
Point:
A point is a way to describe a specific location in space. A point has no length, width or depth. It is drawn by placing a single dot at the location you want to specify, and denoted in text with a capital letter.
Line:
A line is a set of continuous points that extend indefinitely in either direction. A line is identified by naming two points on the line and drawing a line over the letters . Alternatively, a line may be named by using a single lowercase letter (line l).
Plane:
A plane is a set of points that forms a flat surface that has no depth and that extends indefinitely in all directions. A plane is usually represented as a closed foursided figure and is named by placing a capital letter at one of the corners.
