DelMonte, Guidubaldo
,
In duos Archimedis aequeponderantium libros Paraphrasis : scholijs illustrata
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huius figuræ inſcriptæ angulos, qui ſunt vertici
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portionis proximi, eoſquè deinceps coniungen
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tes, baſi portionis æquidiſtantes eſſe; bifariamquè
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à diametro portionis diuidi; diametrum verò in
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proportione diuidere numeris deinceps impari
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bus. </
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<
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autem ordinate oſtenſum eſt. </
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<
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">Scopus Archimedis in hoc ſecundo libio, vt initio primi
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diximus, eſt inuenire centrum grauitatis paraboles. </
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<
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">& vt de
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ducatnos in hanc cognitionem, quadam vtitur figura rectili
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nea in parabole inſcripta, quę plurimùm conducit, & eſt
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expan
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quam medium ad inueniendum hoc grauitatis centrum. </
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<
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">his
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igitur verbis docet, quo modo in parabole in ſcribenda ſit hęc
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figura; in quibus multa quo 〈que〉 proponit tanquam ſit pro
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poſitio quædam; in qua multa ſint oſtendenda. </
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<
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id
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męn demonſtrationem omiſit, ac tanquam ab eo alibi de
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monſtratam. </
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<
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">Horum autem ex Apollonij Pergęi conicis
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demonſtrationem elicere quidem potuiſſemus. </
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<
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id
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">at quoniam
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Archimedes ipſe non nulla ad hæ cſpectantia alijs in locis de
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monſtrauit ideo Archimedem per Archimedem declarare o
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portunum magis nobis viſum eſt. </
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<
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">Sit portio contenta recta linea, rectanguliquè coni ſectio
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ne ABC, cuius diameter BD. Iunganturquè AB BC, diuida
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tur deinde AB bifariam in E, a quo ipſi BD æquidiſtans </
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