Polylines are much more complex than lines，construction lines and ray lines.
举一反三
- Polylines take up more disk space than the equivalent lines and can’t be used to draw ordinary lines.
- Mooring lines include head lines, stern lines, spring lines and breast lines.? 正确|错误
- 中国大学MOOC: Mooring lines include head lines, stern lines, spring lines and breast lines.
- Which of the following lines are used as dimension lines， extension lines， leader lines， construction lines， section lines and projection lines？（ ） A: Thin phantom lines B: Thin solid lines C: Thin center lines D: Wavy lines
- Basically, lines can be used in three ways in drawing: to be used as contour lines, hatching lines, and cross-hatching lines.