Question

If a plane is parallel to the plane of projection, it appears:

Answer 1

Answer

If the observer views the surface such that the lines of sight are parallel to the plane, he or she will see the plane as a single line. ... The plane will appear foreshortened in any view where the surface is neither parallel nor perpendicular to the projection plane.

Answer 2

Complete Question:

If a plane is parallel to the plane of projection, it appears:

A. True size

B. As a line or edge

C. Foreshortened

D. As an oblique surface

Answer:

If a plane is parallel to the plane of projection, it appears true size

Step-by-step explanation:

• A plane seems to be its real size when it is perpendicular to the plane of projection and parallel to the plane of projection from the observer's point of view.
• In contrast to this, the plane appears as a single line to an observer whose line of sight is parallel to the plane.
• The surface can appear deformed or hinted from an endless variety of viewpoints.
• In any view where the projection surface is neither parallel nor perpendicular, the plane appears to be foreshadowed.
• The projection of the line on the plane to which it is parallel will reveal its actual length when a line is perpendicular to one plane and inclined to the other.
• It will always be less than the anticipated length on the plane to which it is inclined.

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