Young, George, jr, Baxter, Hubert Eugene, joint author · New York, The Macmillan Co. · leaf 132
Fig. 113 VI, § 101] POINTS, LINES, AND PLANES 115 on ab as an axis into H, the line oe will be seen in its truelength and drawn perpendicular to ab as shown by oc. Returning to Fig. 114, draw aa perpendicular to a/U and make it equal to aa!. The triangle aal/of … Fio. 114 is the true shape the corresponding triangle in Figs. 113 and 115; <:.y^ and the ^ point 0 in the base is the foot of the perpendicular 00*, which can now be drawn. This last line gives the true length of the altitude of the triangle dee. With the known base de, the point o, and the…
Geometry, Descriptive
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