Kenison, Ervin, Bradley, Harry Cyrus, 1871-1936 · New York : The Macmillan Company · leaf 204
XIX, § 161] TAXGEXT PLAXES 18.; … at c. Project from c to c* inthe if-projection of the base.Then Eh is drawn by connect-ing c* and o*. Find a* in Ehby projecting from a. Asecond result is possible, namely,point b lying in the element F. In general, an assumed pro-jection will represent two points.But let kv be assumed in…
Geometry, Descriptive
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