Higbee, F. G · New York, John Wiley & Sons · leaf 83
will intersect the second Hne at a point which will be the otherend of the shortest connecting Hne. If the length of this Hne berequired it may be found as in Article 38. Construction. Fig. 58 shows two timbers lying in differentplanes. The problem is to find the shortest third timber tojoin them —… … Fig. s7. PROBLEMS ON POINTS, LINES, AND PLANES 73 mn and mn. Now at O, where PQ and MN intersect, erect aperpendicular to the plane R. This perpendicular intersectsAB at C. CO then is the center line of the shortest timber thatcan connect PQ and AB. Its true length may be found asin Article 38.
Geometry, Descriptive
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