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 128
KA describe arc EA cutting KE in E; draw similararc BF cutting MF in F; with centre E and distance EKdescribe arc to cut AG in G ; similarly find H; join EG, GHand HF, completing the octiigon. (Fig. 92.) (6) In a given square. Let BCDE be the given square; draw diagonals intersectingat A. With… … N M Fig. 93. No, 22,—To draw a perfect ellipse by means of the fociand intersecting arcs, axes being given.
Geometrical drawing · Perspective
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