Ames, William L. (William Lewis), 1855-, Wischmeyer, Carl · New York, McGraw-Hill book company, inc.; [etc., etc.] · leaf 78
Fig. 130. Fig. 131. 277. A line 3 in. long between its H and V traces has its H and Ptraces at the same point. The line makes an angle of 45° with H and15° with V. Find a point of the P plane which is 2J^ in. from bothends of the line. 278. A triangular pyramid has a base of 3 in. side and an… … Fig. 132. of 4 in. Show the projections of a point which shall be respectivelyy^ in., J^ in. and 1 in. from the three faces of the pyramid. 279. Find the projections of a line parallel to X which is equallydistant from the points a, 6 and c(Fig. 132). 280. The line A is inclined at 30°to H and 45°…
Geometry, Descriptive
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