American text books of art education : Geometrical drawing (1873)
Smith, Walter, 1836-1886 · Boston : James R. Osgood & Co. · leaf 61
al by a perpendicular in point 1, by Prob. 1, extending thelines of bisection to cut the hexagon in points 2 and 3 ; bisect twoadjacent angles, as 2 1 A and 2 1 D, producing the lines to cut thehexagon in GH I K; draw G K, K H, H I, and I G. G H I K isthe square. Prob. 56.—On a given diagonal A B… … G ,l k ,--r T-V-, —,4- • i- ! K/ ! \ \i1/ -;\ ; ! ,\ \ K H ck4r \ ; ; Prob. 57.— Within a given square A B C D, to inscribe an oc-tagon. Construct a square. Draw the diagonals A C, D B, intersectingin 1; with A B C D as centres and with A 1 as radius, describe arcscutting the square in E F, G H, I…
Geometrical drawing
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