Kenison, Ervin, Bradley, Harry Cyrus, 1871-1936 · New York : The Macmillan Company · leaf 174
lary, § 138), then draw Ar through the trace sxand parallel to Br. From cr drop the perpendicular cTdr to Ar;this is the actual shortest distance required. To find the pro-jections of the perpendicular cd, revolve back from dr perpen-dicular to HX, and find dh in Ah; draw chdh. Project from dhto d… … dvFig. 23.3. c a line which shall be perpendicular to the given line A. Xowif two lines are at right angles, the right angle will project assuch if one of the lines is parallel to a coordinate plane (** 110).Since A is parallel to H, draw chdh perpendicular to J\ givingat once the H-projection of…
Geometry, Descriptive
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
