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 108
e lines AB andBC. In the example given MA : MC as 2 :1. The same resultwould be obtained from any point in the circle. Peoblem 121. To divide a rigid angle into five equal ^arts. Let ABC be the right angle. /Divide BC in D, so that BC : BD ::BD:DC (Prob. 116). With C ascentre, and CB as radius,… … Fig. 194. Peoblem 122. To find the Arithmetic, the Geometric, and the Harmonicmeans hetiveen tioo given lines AB and BC. Bisect AC in D (Prob. 1). With D as centre, and radius DA,draw the semicircle AEC. At B draw BE perpendicular to AC (Prob. 5). Join DE. From B draw BF perpendicular to DE, AD is…
Geometrical drawing
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