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 560
lems are based on theless third proportional (Probs. 114 and 115, Plane Geometry). 4 GRAPHIC ARITHMETIC 539 Problem 265. Determine the square, cute, fourtli, fifth, and sixth powerof a, fraction {^). The line AB = the unit. Fig, 319. Draw the lines AB and AC at any angle with each other.Make AC = ^… … Then AE is the square, and AG- the cube. The other powersare determined in the same manner. Problem 266. r5 Find the value of - . The ^tnit = 2|. In the preceding problem the line AB = 2^ and the lineAC = |- of AB, so AH is the value required. EVOLUTIOX, OR THE EXTRACTION OF ROOTS. If a number is…
Geometrical drawing
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