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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 130

An illustration from 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, leaf 130
ius of the given circle. Divide it into fiveequal parts (Prob. 10). Bisect AB (Prob. 1), and from itscentre describe the semicircle ACB. Erect perpendiculars oneach of the divisions of AB till they meet the semicircle inthe points C, E, H, and K (Prob. 8). With A as centre, andthe points C, E, H,… … Fig. 235.circle. Each of the other radii can be proved in the same way. Peoblem 153. To divide the area of a given circle into any number of equal partswhich shall also have equcd perimeters, e.g. five. Draw the diameter AB, and divide it into five equal parts

Geometrical drawing

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