Question

assessment - welding blueprints & symbols
welding blueprints & symbols
10 of 10

which of the following is not a line used on blueprints?

○ object lines
○ hidden lines
○ center lines
○ photo lines

Explanation:

In blueprint reading (relevant to engineering, a subfield of Natural Science), common lines on blueprints include object lines (show visible edges), hidden lines (show hidden edges), and center lines (show axes of symmetry/rotation). "Photo lines" is not a recognized type of line used on blueprints.

Answer:

D. Photo lines