Science and art drawing : complete geometrical course ; consisting of plane and solid geometry, orthographic and isometric projection, projection of shadow's the principles of map projection, graphic arithmetic and graphic statics (1895)
Spanton, J. Humphrey (John Humphrey) · London : Macmillan · leaf 176
can obtain a conic section to suit any required condition,both as to shape or size. A truncated cone or frustrum is the part of the cone belowsection A, Fig. 281. CONIC SECTIONS 155 The Ellipse. An ellipse has two unequal diameters or axes, wliicli are atriglit angles to each other. The longer one… … Problem 178. The two axes AB and CD leing given, to construct an ellipse. Take a strip of paper and set off upon it the distance FH,equal to half the major axis,and the distance FG, equal tohalf the minor axis. By keepingthe point G- on the major axis,and the point H on the minoraxis, the point F…
Geometrical drawing
Internet Archive · Wellesley College Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from Nicolai Copernici Torinensis De reuolutionibus orbium coelestium, libri VI : Habes in hoc opere iam recens nato, & aedito, studiose lector, motus stellarum, tam fixarum, quàm erraticarum, cum ex ueteribus, tum etiam ex recentibus obseruationibus restitutos: & nouis insuper ac admirabilibus hypothesibus ornatos. Habes etiam tabulas expeditissimas, ex quibus eosdem ad quoduis tempus quàm facillime caculare poteris. Igitur eme, lege, fruere. [Line in Greek] (1543)](https://img.insideoutlibrary.com/img/200/ia-nicolaicopernici00cope-217-133.webp)
