Kenison, Ervin, Bradley, Harry Cyrus, 1871-1936 · New York : The Macmillan Company · leaf 173
to a given straight line is obtained bydropping a perpendicular from the point to the line. Thisperpendicular evidently lies in the plane which is determinedby the given point and line. Problem 25. To find the shortest (perpendicular) distance froma point to a line. Analysis. In the general… … Fig. 232. plane, obtaining thus the true relative position of the line andpoint. Draw the required perpendicular in the revolved posi-tion. To find the projections of the perpendicular, revolvethe auxiliary plane back to its original position. 152 XVI, § 143] PROBLEMS OX THE LIXE AXD PLAXE 153…
Geometry, Descriptive
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