Archimedes
,
Archimedis De iis qvae vehvntvr in aqva libri dvo
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medis. </
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">ergo punctum v extra p riſima a f poſitum, centrũ
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erit magnitudinis cõpoſitæ e x omnibus priſmatibus g z r,
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r β t, t γ x, x δ k, k δ y, y u, u s, s α h, quod fieri nullo modo po
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teſt. </
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<
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ræ intra ipſam poſitum, non extra. </
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<
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trum grauitatis priſmatis ſit in linea K m. </
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riam in ξ diuidatur: </
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<
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a g d plan um ducatur; </
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lelogrammo b f ſectionem ξ π di uidet punctum π lineam
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quoque c f bifariam: </
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communis ſectio g u; </
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poſitum ſi t. </
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tis priſm atis in ipſa g u ineſſe. </
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a d π ξ communis ſectio linea ρ ο τ quæ quidem priſmatis
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axis erit, cum tranſeat per centra grauitatis triangulorum
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a b c, g h k, d e f, ex quartadecima eiuſdem. </
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grauitatis pri ſmatis a f eſt punctum σ, centrum </
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