Perspective and geometrical drawing : adapted to the use of candidates for second and third-class teachers' certificates (1887)
McGuirl, Thos. H. (Thomas H.) · Toronto, Ont. : W. Briggs · leaf 119
Fur. 83. No. 15.—To construct an equilateral triangle about a givencircle. … Fig. 84. GEOMETRICAL DRAWING. 117 Let BCD be given circle; at any point A in the circumfer-ence, with distance equal to radius, describe an arc, cuttingcircle in B and C; with centre C, and same distance describean arc, cutting circle in D; describe similar arcs with centresB and D; these arcs…
Geometrical drawing · Perspective
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