Barrow, Isaac, 1630-1677, Child, J. M. (James Mark), tr · Chicago, London : The Open court publishing company · leaf 174
is GF. Note In § 29, Barrow gives no indication of the source of theknown dimensions, and there is also probably a misprint;for the spaces ADB, ADE, we should read the spacesAN ED, AGED, unless Barrow intended ADE to stand forboth the latter spaces. If so, we have from § 2, areaAOED = 2/3 of AD .… … Fig. 151. PN, CF in V, Z, and RT parallel to AC, cutting PN, CF inT, Y; then we have CP : CM = MT : MR = MT : NV, .-. CP.NV = CM. MT.Hence area AN ED + CD. DE= the sum of VN . CP+ . . .= the sum of CM . MT+ . . .= CM .(the sum of MT+ . . .)= CM.BD; Area ANED = CA.BD-CD. DE..-. CA . BD - CD . DE…
Geometry
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