It all depends on your drawing, they all need different sets of base lines, as in anime people need base lines to draw the head, the horizontal line is used for the eyes.
cuz then the lines are straight.
No
when you do a drawing using only lines
18 lines-6 of each color.
Connect the Dots
Drawing Black Lines was created on 2000-03-21.
DSDGER
Hidden lines.
cuz then the lines are straight.
5 lines
A drawing of a 30 degree angle!
Gerrymandering
No
Used for drawing horizontal lines. To support set squares when drawing vertical line and inclined lines.
when you do a drawing using only lines
By dashes.
Isometric drawings are drawn to the same scale along all three axes (x,y,z) so are useful for giving a sense of relative dimensions, and three dimensional scale. Measurements can also be taken from the drawings for items that lie along or parallel to an axis.