Wallis, Rolland S. [from old catalog], Iowa state college of agriculture and mechanic arts, Ames. Dept. of engineering extension. [from old catalog] · Ames, Iowa, Engineering extension department, Iowa state college · leaf 64
using the triangles (Fig. 7a). The intersections with AB will formthe desired divisions. To Bisect an Angle.—(Fig. 82c.) Given the angle AOB. With 0as a center and any radius R, strike an are to obtain intersections C andD. With C and D as centers and any radius R._, strike arcs intersectingat E.… … Fig. 82. To Construct a Triangle.— (Fig. 82e.) Given the sides B and C asradii strike arcs intersecting at F. Draw DF and EF. .-Line to be divided -t—/—t
Mechanical drawing
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