Division, ContinuedPreferredmethod fordividing linesintoproportionalpartsTo divide a line into proportional parts, use this table:StepAction1Given line AB, draw a perpendicular line at B.2Select any scale and set the first increment (0) at A.3Position the scale so that the total number of increments aligns withthe perpendicular line at B.4Set off the desired increments with tiny pencil marks. In this case2, 3, and 4 units are marked.5Draw vertical lines through these points to the given line.Figure 2-22.—Dividing lines proportionately.Continued on next page2-23
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