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

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EUTOCn COMMENTARIA IN CONICA. 201<br />

B recta BJ, <strong>quae</strong> eas in binas partes aequales secet.<br />

dicit igitur: lineae ABF diametrum adpello BA, uerticem<br />

autem 5, et ad BA ordinate<br />

ductas esse AF, AE, ZH,<br />

&K. sin BA et in binas partes<br />

aequales et ad angulos rectos rectas<br />

parallelas secat, axis uocatur.<br />

Similiter uero etiam duarum<br />

linearum curuarum, et<br />

<strong>quae</strong> sequuntur [I p. 8, 1].<br />

Si enim fingimus lineas A, B<br />

et in iis parallelas F^ , EZ, H®, KA, MN,<br />

ISIO et AB ad utramque partem productam parallelasque<br />

in binas partes secantem, AB, inquit,<br />

diametrum trans-<br />

-^r L^ ^ uersum adpello,<br />

^z<br />

uertices autem linearum<br />

A, B<br />

puncta,<br />

ordinate<br />

autem ad A B<br />

ductas FAj EZ,<br />

H@, KA, MN,<br />

2 [p<br />

^ IS}0. sin et in<br />

binas partes et<br />

ad angulos rectos eas secat, axis uocatur. sin recta<br />

ducta ut UP rectas FlS!,<br />

EM^ HK rectae AB parallelas<br />

in binas partes secat,<br />

HP diametrus recta uocatur,<br />

et rSj EMy HK singulae ad diametrum HP ordinate<br />

ductae esse dicuntur. sin eam et in duas partes ae-<br />

AB] A corr. ex ^ m. 1 W.<br />

7} gd- oji j^\ corr. Comm.<br />

OQd^La fisv] 6 (eras.) q^ icc /* W,

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