Valerio, Luca, De centro gravitatis solidorvm libri tres
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              COROLLARIVM.
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              <s>Manifeſtum eſt autem omnia proximis qua­
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              tuor propoſitionibus
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              de figura circa axim,
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              vel diametrum in alteram partem deficienti, ea­
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              dem ijſdem rationibus oſten ſa remanere de com­
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              poſito ex duabus figuris circa communem axim
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              vel diametrum in alteram partem deficientibus,
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              tam per ſe conſiderato, quàm ad alteram figuram
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              circa eundem axim, vel diametrum cum prædi­
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              cto compoſito, in alteram partem deficiens, ac ſi
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              eſſent duæ tantummodo dictæ figuræ, quales in
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              præcedenti proxima inter ſe comparauimus; ma­
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              nente ſemper illa conditione, quàm de ſectioni­
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              bus in vigeſima huius diximus. </s>
              <s>Tantum aduer­
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              tendum eſt, vt pro ſectionibus, dicamus compoſita
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              ex binis ſectionibus (quæ ſcilicet fiunt ab codem
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              plano, vel eadem recta linea) cum de prædicto com
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              poſito ſit ſermo: & in demonſtratione, procylin­
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              dris, vel cylindri portionibus, vel parallelogram­
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              mis, compoſita ex binis cylindris, vel cylindri por
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              tionibus, vel parallelogrammis(quæ ſcilicet ſunt
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              inter eadem plana parallela, vel lineas parallelas,
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              & circa eundem axim, vel diametrum totius vel
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              diametri, vel axis partem) ſicut & pro figura com­
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              poſitum ex duabus dictis figuris: pro reſiduo, com
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              poſitum ex reſiduis. </s>
              <s>Nam cum vtriuſque reſidui </s>
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