PERPENDICULAR LINES.
[Fig. 15] shows six lines—upright and perpendicular, with points or “dots” indicated at the top and bottom of each line; to draw these, proceed thus:
Fig. 15.
Fig. 16.
The learner should stand with his right shoulder opposite the board, and the weight of the hand and the arm should be allowed to fall naturally; now, make on the board two points, one being six inches above the other, these being merely “dots,” shown at the ends of the lines, [figs. 15], etc., and made with two motions; the line between the points should now be drawn not too quickly from the upper to the lower point; three movements of the hand and arm complete the line; to draw the other five lines the movements have simply to be repeated.
If the student pronounces to himself “one,” “two,” “three,” at each motion, it will be helpful; in this exercise, [fig. 15], the aim is to make six lines, each line being parallel to the first. Again, in the example, it is intended that the lower point should be made first, next the upper, and lastly the line drawn from the upper to the lower point, but the order may be reversed; at one the upper point, at two the lower, at three the stroke upwards to complete the line.