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 190
IDAL CURVES, ETC 169 line tt parallel to AB till it meets the circle E in t. Join tm.Draw tlie normal vjt parallel to tm, and the tangent rs at rightangles to it. Problem 195. To draw an cjjici/doid. Note.—The length of the arc of director is to the whole circleas the radins of the rolling circle… … Fig. 305. the generator. Make AB equal in length to half the rolling-circle AlNI^j), and divide it into any number of equal divisions,say six, d, e, f, g, h, and k (Prob. 14). Divide the semicircleinto the same number of equal divisions, and draw lines fromthese points, as well as from the centre…
Geometrical drawing
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