For an alternate method of proportionally dividing lines, use this table:
Given line AB, draw another line (CD) at any distance below and
parallel to the given line.
Set your scale along CD with 0 at endpoint C and set off the
desired number of increments. Here the increments are 0, 2, 5, and
With a straightedge, draw lines through endpoints A and C (0) and
B and D(9) to intersect (0) any distance above AB.
Using your straightedge, connect lines 2 and 5 to 0.
Figure 2-23 is an alternate method for proportionally dividing lines.
Figure 2-23.An alternate method of dividing a line