Kenison, Ervin, Bradley, Harry Cyrus, 1871-1936 · New York : The Macmillan Company · leaf 249
Fio. 303 (repeated). It is geometrically possible to layoff the triangle - 12 «on the other side of 2-12. But by visualization of the ]><>si- 228 DESCRIPTIVE GEOMETRY [XXII, § 180 … Fig. 304. XXII, §180] PLANE AND CONE 229 tion of the point s relative to the cone, as shown especially inthe .^-projection (s on the side of element 0-2 aivay from 0-1)it will be seen that the position of s as given in the develop-ment is the only one which represents the point. The remaining cases…
Geometry, Descriptive
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