le being given, the fide of a Pentagon is alfo given; for, bv this Propo-fition, C X the fide of a Decangle being fubtra£ted from the Diameter C B, the difference X Bmultiplied by DB Radius, is the fquare of EB, the fide of a Pentagon, whofe fquare root isthefideitfclr. 10 The fubtenfe of 24… … 10 Triw/winctr/a o ■ontmimcti Vemonfimioto In the annexed Diagram D H is the bafe of an equilateral triangle, E G Mu J bate of a Quinquangle. Now then DB being the third part, or five 15 of*a circle, and BNEfix 1 > , it followed^, that D £ is one 15 part ofthe fame circumference inferibed…
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