Projection Lines are Always

Question

Projection lines are always:
A) perpendicular to fold lines
B) parallel to the profile plane
C) perpendicular to the frontal plane
D) parallel to the horizontal plane

Accepted Answer

Projection lines are always perpendicular to fold lines, as they help to show the true shape and size of the folded object. This is especially important when creating technical drawings or diagrams. Parallel lines would not accurately depict the changes in direction and angle that occur with folding, while lines that are perpendicular to the frontal or horizontal planes may not be relevant to the specific fold being depicted.