A text book of geometrical drawing : abridged from the octavo edition : for the use of schools in which the definitions and rules of geometry are familiarly explained, the practical problems are arranged from the most simple to the more complex, and in their description technicalities are avoided as much as possible : with an introduction to isometrical drawing : and an essay on linear perspective and shadows ... (1849)
number of equal parts, say twelve. 3rd. With one of those parts in the dividers, stepoff from Fthe same number of times to G, then drawthe radius E. G, to complete the figure. PLATE XVILCOVERINGS OF SOLIDS Fig. 1. The Sphere Is a solid figure presenting a circular appearancewhen viewed in any… … Yii^ Mira/ie. IUma.n EcSons. PLATE XVII. 57 2nd. The chord around which it revolves is calledthe axis^ the ends of the axis are called poles, 3rd. Any line passing through the centre of a sphereto opposite pointSj is called a diameter. 4th. Every section of a sphere cut by a plane mustbe a circle,…
