Descriptive geometry for students in engineering science and architecture; a carefully graded course of instruction (1915)
Armstrong, Henry F. (Henry Fry), 1868- · New York, J. Wiley & sons, inc.; [etc., etc.] · leaf 33
Fig. 21. EXERCISE X 1. Find the shadows for the rectangle, the square and the circles shown at (a), {h), (c) and(d). Keep them well apart from each other. 2. Find the shadow of the awning represented in plan and elevation at (e). … 3. Arrange other cases for the square and the circle, varying the direction of the rays of light.For example, let a horizontal circle, 2 diameter, touch the V.P. 3I above the XY, and let therays have elevations at 45° and plans at 30° to XY. The result will be a shadow on the V.P.elliptical in…
Geometry, Descriptive
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