Science and art drawing : complete geometrical course ; consisting of plane and solid geometry, orthographic and isometric projection, projection of shadow's the principles of map projection, graphic arithmetic and graphic statics (1895)
Spanton, J. Humphrey (John Humphrey) · London : Macmillan · leaf 74
vo sides of thegiven triangle. Bisect the two sides of the triangle by lines intersecting INSCRIBED AND DESCRIBED FIGURES 53 each other at the centre D. Draw a line from point C through the centre D till it meets the base at E. Bisect the angle BEC by a line meeting DB in F. With D as centre, and… … Pkoblem 72. In a given equilateral triangle ABC, to inscribe three equal circlestouching each other and one side of the triangle only. Bisect two sides of the triangle by lines intersecting eachother at the point D (Prob. 1). Join CD and produce itto E. Bisect the angle DBF by a line cutting CE in…
Geometrical drawing
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