Valerio, Luca, De centro gravitatis solidorvm libri tres

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              li igitur minor erit proportio QR, ES ſimul ad EF,
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              quàm TV, GX ſimul ad GH. & permutando, minor
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              proportio QR, ES ſimul ad TV, GX ſimul quàm EF
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              ad GH. & conuertendo, maior proportio GX, TV ſi­
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              mul ad ES, QR ſimul, quàm GH ad EF. </s>
              <s>Similiter
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              oſtenderemus duo ZI, AY, ſimul ad TV, GX, ſimul,
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              maiorem habere proportionem, quàm AK ad rectarum
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              GH. </s>
              <s>Rurſus quoniam puncta N, O, in medio BL, LM,
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              ſunt, ipſorum EF, GH, centra grauitatis: duorum autem
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              QR, ES ſimul centrum grauitatis eſt in linea NL, pro­
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              pterea quòd ES maius eſt quàm QR, & æquales BN,
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              NL, quas centra grauitatis ipſorum QR, ES bifariam
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              diuidunt, cadet ipſorum QR, ES, ſimul centrum grauita­
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              tis propius termino D, quàm ipſius EF centrum grauitatis,
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              & duobus centris N, O, interijcietur. </s>
              <s>Eademque ratio­
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              ne duorum TV, GX, ſimul centrum grauitatis termino
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              D erit propinquius quàm ipſius GH centrum grauitatis,
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              & duobus centris O, P, duorum GH, AK interijcietur.
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              </s>
              <s>Et duorum ZI, AY ſimul centrum grauitatis propin­
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              quius erit D termino, quàm P ipſius AK. </s>
              <s>Quoniam
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              igitur omnia primarum magnitudinum, ex quibus conſtat
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              figura ſecundo circumſcripta centra grauitatis in eadem re
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              cta linea BD, diſpoſita ſunt alternatim ad centra grauita­
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              tis ſecundarum primis multitudine æqualium, ex quibus
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              data figura conſtat ipſi ABC figuræ circumſcripta, ſunt
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              termino D propinquiora, quàm centra grauitatis ſecunda­
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              rum, ſi bina, prout inter ſe reſpondent comparentur: maior
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              autem proportio oſtenſa eſt primæ ad ſecundam in primis,
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              quàm primæ ad ſecundam in ſecundis: & ſecundæ ad ter­
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              tiam in primis, quàm ſecundæ ad tertiam in ſecundis,
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              ſumpto ordine à termino D, erit centrum grauitatis om­
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              nium primarum ſimul, ideſt figuræ ipſi ABC figuræ
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              ſecundo circumſcriptæ termino D propinquius, quàm
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              datæ figuræ eidem ABC figuræ primo circumſcriptæ cen­</s>
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