Kenison, Ervin, Bradley, Harry Cyrus, 1871-1936 · New York : The Macmillan Company · leaf 182
, § 146] PROBLEMS ON THE LINE AND PLANE 161 A is parallel to H, the plane Z is perpendicular to H. Theline A intersects the plane Z in the point c (cA, c) (Prob. 13,Special Case, § 119). Revive the plane Z about HZ into H.The revolved position, cr, is obtained simply by making thedistance from HZ… … Fig. 244. Fig. 245. the included angle, 0, between these lines is the angle betweenthe given planes. Note. The student may discover that TrZ, and also c, are superfluousin this construction. Special Case II. One of the given planes is parallel toII or V. This case falls under the solution just…
Geometry, Descriptive
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