Points, Lines and Planes are undefined terms in Geometry whose meaning is accepted without definition. These terms have similar meanings in Geometry as they are used in algebra, like the coordinate plane, ordered pairs and lines . Let us see the description of these terms and how they are represented.
| A represents just a location and does not have a size.
|| A point is represented by a dot and is named
using a capital letter. The Point is A is shown here.
| A line has no thickness and contains infinitely many points and it represents a straight path
extending in opposite directions.
| A line is represented by two points on the line,
like or . A line is also represented by a single lower case
letters like 'l'.
| A plane is a flat surface made up of infinitely many points extending in all direction without
|A plane can be represented by a capital letter like Plane X.
It can also be represented by three points
which do not lie on the same line like
Now, let us learn about some special points, lines and planes.
|Equation of a Line Calculator Given Two Points||Equation of Tangent Line at a Point Calculator||Point Slope|