Kenison, Ervin, Bradley, Harry Cyrus, 1871-1936 · New York : The Macmillan Company · leaf 133
127 127. The Intersection of a Plane and a Pyramid. Before be-ginning to find the intersection, visualize the solid, to deter-mine its visible faces. Then when the first line of intersectionis found, if it be on a visible face, make it a full line. If it ison an invisible face, make it a dotted… … Fig. 188. intersection requires merely the application and extension ofthe preceding method. In Fig. 188 let it be required to find the intersection of thelimited plane JK with the faces of the triangular pyramid XIII, § 127] INTERSECTION OF SOLIDS 113 oabc. In the plan, all the faces are visible…
Geometry, Descriptive
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