ANSWERS TO PRACTICE EXERCISE
1.
a.
One-point exists when two dimensions of an object height and
width are parallel to the picture plane.
b.
Two-point exists when the object is sitting at an angle to the
picture plane.
c.
Three-point exists when none
of
the
object's
surfaces
are
parallel to the picture plane.
2.
To establish the needed station point and vanishing points.
3.
a.
The horizon.
b.
The station point.
c.
The vanishing point.
4.
a.
Step one is to draw a line to represent the picture plane.
b.
Step two is to select the station point (approximately the center
of the plan view at a 30 overall angle).
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