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Apollonii Pergaei quae graece exstant cum ... - Wilbourhall.org

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CONICORUM LIBER in. 379<br />

similiterque descriptis figurae ad ^F adplicatae esse<br />

ducatur ab N rectae AE parallela iV^*, ea igitur<br />

ad J5z/ ordinate ducta est [I def. 6]. et latus rectum<br />

sit BIT. iam quoniam est [I def. alt. 3]<br />

Bn'.Ar= AriBj,<br />

erit etiam BU : BA = AT^ : BA^ [Eucl. V def. 9].<br />

uerum BA^ figurae ad ^F adplicatae aequale est<br />

[I, 15]. itaque ut BTI:BAj ita AF^ ad figuram<br />

ad AT adplicatam. uerum ut AV^ ad figuram<br />

ad ^r adplicatam, ita iV^^ ad figuram ad iV^*<br />

adplicatam figurae ad AT adplicatae similem [Eucl.<br />

VI^ '^'^^. quare etiam, ut UB : BAj ita iV^^ ad figuram<br />

ad N^ adplicatam figurae<br />

ad AF adplicatae similem.<br />

uerum etiam [I, 21] nB:BA = NlEl^ : B^Sl X ^z/.<br />

itaque [Eucl. V, 9] figura ad NlSl, hoc est [Eucl. I, 34]<br />

ad ZAy adplicata figurae ad AF adplicatae similis<br />

aequalis est rectangulo BS X lEjA. iam similiter<br />

demonstrabimus, figuram ad KA adplicatam figurae<br />

ad ^r* adplicatae similem aequalem esse rectangulo<br />

BAx AA. et quoniam recta iV0 in H in partes<br />

aequales [I def. 6]; in Z autem in inaequales secta est,.

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