Crawshaw, Fred D. (Fred Duane), b. 1874, Phillips, J. D. (James David), 1869- joint author · Chicago, New York, Scott, Foresman and company · leaf 222
sect. An example of theintersection of two prisms is afforded in the case of the roof of ADVANCED DRAWING 217 a house, as shown in Fig. 240. The line of intersection is the lineabc where the roofs meet. It is quite evident that this brokenline abc lies in the surface of the main roof and also in… … Fig. 240. Illustration of an Intersection intersection between two surfaces is the line which lies in bothsurfaces. In the following discussion of the laying out of pat-terns of objects containing intersecting surfaces, this definition,if kept clearly in mind, will help in grasping the principles…
Mechanical drawing
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