Ames, William L. (William Lewis), 1855-, Wischmeyer, Carl · New York, McGraw-Hill book company, inc.; [etc., etc.] · leaf 88
stated as Principle 4. The other is thatthe shadow of a horizontal circle on a vertical plane incUnedat 45° to V shows as a circle in the V projection, the diameterof the shadow projection being to the diameter of the circleas the half diagonal of a square is to a side of the square.This is…
Geometry, Descriptive
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
