Kenison, Ervin, Bradley, Harry Cyrus, 1871-1936 · New York : The Macmillan Company · leaf 129
DS BOUNDED BYPLANE FACES 122. A Plane Determined by Two Lines. A plane is com-pletely determined when any two of its lines, not necessarilyits traces, are known (§ 106). Hence, if a plane be given bymeans of any two intersecting or parallel lines in space, it isnot always necessary, nor even… … Fig. 184. line C, Fig. 184, intersects the plane of the intersecting linesA and B. Instead of finding the traces of the plane containingA and B (Prob. 6, § 106), and then finding the point in which 0intersects this plane (Prob. 13, § 119), let us proceed at once, asin the usual method of Problem…
Geometry, Descriptive
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