Perspective and geometrical drawing adapted to the use of candidates for second and third-class teachers' certificates (1887)
McGuirl, Thomas H. [from old catalog] · Toronto, W. Briggs; · leaf 119
Let AD be the given altitude; at A and D draw perpen-diculars, and with A as centre and any distance describe anarc EF; with D as centre and any distance less than DAdescribe an arc to cut arc in E and F; join AE and AF, andproduce them to base, forming isosceles triangle ABC. (Fig.80.) JSo, IS,—To… … BOG Fig. 81. Let AD be the given altitude ; through A, draw EAF per- GEOMETRICAL DEAWING. 115 pendicular to AD; with centre A describe any semicircleEGHF, and with centre F and distance FA, describe arc tocut arc GH in H; also with centre E and same distance de-scribe arc to cut GH in G. Join AG…
Geometrical drawing · Perspective
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