Spanton, J. Humphrey (John Humphrey) · London, Macmillan and Co., Limited; New York, The Macmillan Company · leaf 68
In a given equilateral triangle ABC, to inscribe a trefoil. The Trefoil. — Bisect theangles CAB and ABC bylines produced till they meetin L, and the sides of thetriangle in D and E. FromC, through centre L, draw theline CF. Join DE, EF, andFD. From G draw GI per-pendicular to AC. WithG,H,and K as… … 81. Within a given circle, to inscribe three equal semicircles havingadjacent diameters. Find centre of circle A (Prob. 32). Draw the diameter BC, and FOILED FIGURES. 55 the radius AD perpendicular to it (Prob. 5). Trisect the angleBAD in E and F (Prob. 13). Set off DG equal to DF.Join FA and GA by…
Geometrical drawing · Design · Drawing
Internet Archive · Wellesley College Library · Public Domain Mark 1.0. Free to use for anything.
