Spanton, J. Humphrey (John Humphrey) · London, Macmillan and Co., Limited; New York, The Macmillan Company · leaf 33
e semicircleAGC, cutting the bisector in G;and with the same radius, setoff the points E and F from Aand C ; join AG ; take thelength AG and set it off fromH along the line GB, whichwill give the point I ; join EIand FI, which will give thepoints J and K on the arc AHC ;join J and K with B, which… … Fig. 41. trisect the angle ABC. GEOMETRICAL DRAWING AND DESIGN. Triangrles.
Geometrical drawing · Design · Drawing
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