American text books of art education : Geometrical drawing (1873)
Smith, Walter, 1836-1886 · Boston : James R. Osgood & Co. · leaf 75
D, E F, G H, and then the diagonals of the smaller squares EG, E H, F G, F H. Draw lines joining the centres of the smallersquares, thereby obtaining points 1, 2, 3, 4, which are the centres ofthe semicircles touching one side ot the square. 1 G being the radius. Prob. 79. — Within or about a given… … set off D E on A B in 1. Bisect the angles at A, B, and C, produ-cing the lines of bisection until they meet in O. Draw from 1 a lineparallel to A O, to cut B O in 2. From A set off the distance 1 2in point 3. Draw 3 2, and from 3 and 2 draw lines parallel withA C and B C, to meet 0 C in 4. 3 2 4…
Geometrical drawing
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