Page:An introduction to linear drawing.djvu/29

8 ﻿33.Draw obliques equidistant (that is, equally distant) from a perpendicular.

Draw first a horizontal, raise a perpendicular on its centre, and then draw a line from the top of the perpendicular to each end of the horizontal. The figure will then be an isoceles triangle, as in fig. 11.

34.Make a scalene triangle.(fig. 13.)

As it is not difficult to make a triangle of unequal sides, it will be well for the monitor to prescribe the length of one or more of them. Thus he may say: "Make a scalene triangle, of which the three sides shall measure one inch and two tenths; one inch; and eight tenths of an inch."

35.Make an equilateral triangle.(fig. 20.)

After the pupil makes the figures exactly, let the length of the sides he given, as one, two, three, &c. inches. Then require the point to be under the base, turned to the right, &c.

36.From a given point draw a perpendicular.

First draw a right line, then make the proposed point, and lastly draw the perpendicular.

2737 [sic].Raise a perpendicular on the end of a right line.



38.Make a Rhomb or Lozenge.(fig. 21.)