When we are dealing with three dimensional (3D) shapes we have a problem if we want to draw them on a flat piece of paper.
Sometimes it is better to draw it as a 3D shape (although this can be difficult to do) but sometimes it is easier to draw the plan and elevations of the shape.
What are plans and elevations.
For a 3D shape, there are only three directions you can look at it in, from the top, from the side and from the front (or back). These are called Plans and Elevations.
Example: Draw the plans and Elevations of the following shape.
When we are drawing plans and elevations, the easiest way to do it is to shade the squares you would see if you looked in from each direction.
When we have this, we can then simply draw the squares that appear in two dimensions.