Clavius, Christoph
,
Geometria practica
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LIBER QVARTVS.
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Ellipſis ABCD, eſſeæqualem.</
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ſexti.</
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ex BD, ad quadratũ ex ex HI. </
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dratum ex B D, ad quadratum ex HI, ita eſt
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circulus diametri B D, ad circulum diametri
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HI. </
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lus diametri B D, ad circulum diametri HI.
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de Conoidibus, & </
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maior diameter BD, ad minorem AC, ita cir-
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culus diametri BD, ad Ellipſim ABCD; </
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bebit circulus diametri BD, eandem propor-
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tionem ad circulum diametri HI, & </
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diametri HI, areæ Ellipſis ABCD, æqualis erit. </
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data parabola ABC, cuius baſis AC, & </
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amin D, & </
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baſem, ac verticem cum parabola. </
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tia pars ipſius A C: </
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area triãguli ABE. </
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lem areæ parabolæ A B C. </
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triangulum A B C: </
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A C, ſeſquitertia, ex conſtructione; </
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quo que triangulum ABE, trianguli ABC,
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ſeſquitertium. </
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in lib. </
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">de Quadratura paraboles demõſtra
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uit, parabola quo que ABC, trianguli A-
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BC, ſit ſeſquitertia: </
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<
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<
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gulum A B C, eandem proportionem. </
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<
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