Kenison, Ervin, Bradley, Harry Cyrus, 1871-1936 · New York : The Macmillan Company · leaf 149
Fig. 200. Fig. 201. Conversely, if Ah is given coincident with HQ, Av may betaken at random in any position except perpendicular to GL,and the case is indeterminate. But if the given plane Q, Fig. 201, be perpendicular to H, andif Ah be assumed not coincident with HQ, the solution…
Geometry, Descriptive
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
