In geometry, lines as we will as planes are two basic shapes.
- A line is a set of points that stretches infinitely in opposite directions. It has only one dimension, i.e., length. The points that lie on the same line are called collinear points.
- A point is a location in a plane that has no size, i.e. no width, no length and no depth.
Line of intersection of planes
Two planes can be related in the following ways, in a three-dimensional space.
- They can be parallel to each other
- They can be identical
- They can intersect each other
The figure given below represents two intersecting planes