1. Given, the elevation and
plan of a cube.

2. Locate the spectator point
and the picture plane.

3. Join each of the corners in
plan to SP, these lines are
called lines of sight.

4. Insert ground line and
horizon line, horizon line
is the height of the
spectator from the ground.

5. Where the lines of sight
intersect the picture plane
draw perpindicular lines
to locate the corners in
perspective.

6. Draw in the front face of
the cube in perspective,
taking the height from the
elevation.

7. Locate the vanishing point
by drawing a line from
spectator point onto the
horizon line.

8. Join the corners of the
cube in perspective back
to the vanishing point.

9. Where the lines of sight
intersect the picture plane
draw perpindicular lines
to locate the corners in
perspective.

10. Complete perspective
projection by joining
the corners together.