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 61
ence the points ofthe polygon. Join these points, which will give the pentagonrequired. Problem 42. On a given straight line AB, to construct a regular pentagon. At B erect BC perpen-dicular to AB, and equal to it.Bisect AB in D. With D ascentre, and DC as radius, drawthe arc CE meeting AB… … Fig. 101. Join AH, HE, POLYGONS 41 YK, and KB. Then AHFKB will be the pentagon re-quired. Problem 43. — On a given straight line AB, to construct a regular hexagon. With A and B as centres,and radius AB, draw the arcsintersecting each other at C.With C as centre, and with thesame radius, draw a…
Geometrical drawing
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