LINES: Object and Projection
Various lines on a drawing have different meanings. They may appear solid, broken, thick, or thin. Each is designed to help the blueprint (print) reader make an interpretation.  

Carefully review the document below in its entirety to learn about Object Lines and Hidden Lines . 

Next, select the blue right arrow button at the bottom of the "Up Next Box" to advance through the course.

LINES: Object and Hidden
LINES: Object and Hidden
Review this document in its entirety.