Spanton, J. Humphrey (John Humphrey) · London, Macmillan and Co., Limited; New York, The Macmillan Company · leaf 118
EFG.It is not necessary that the centre of simihtude should be taken outside the figure; if moreconvenient, we can use one ofthe angles of the figure, e.g. letA be the centre of similitude.Draw lines from all the anglesof the polygon to A. Make AKtwo-thirds of AD (Prob. 117),and divide all the… … Fig. 207. are parallel to each other. 153. To draw an irregular pentagon similar to a given pentagonABCDE, but with sides one-half the length of those of the given pentagon,without using anycentre of similitude.Draw FG in anyconvenient positionparallel to AB, andhalf its length (Prob.4). From G…
Geometrical drawing · Design · Drawing
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