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 124
is case)into six equal parts. Take centre O, and join any two, as OA,OB; bisect the angle AOB by OE, and at E draw a tangentCD; produce OA and OB to meet the tangent in C and D. GEOMETRICAL DRAWING. 119 Bisect the angles at C and D by CF and DF, meeting at F;then with centre O and distance OF… … Fig. 88. Let AB be the given line, produce it both ways; then withcentre A and distance AB, describe the senucircle DEB,describe also a similar semicircle AFC. Divide the circumfer-ence DEB into as many equal parts as the polygon is to havesides (in this case five), and join A with the second point…
Geometrical drawing · Perspective
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
