Clavius, Christoph
,
Geometria practica
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GEOMETR. PRACT.
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AE. </
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duplicetur, fiet recta æqualis ſemicircumferentiæ eiuſdem circuli: </
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druplicetur, fiet recta toti circumferentiæ æqualis.</
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diameter alicuius circuli, eius latus A D, quartæ parti circumferentię
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illius circuli eſſe æquale: </
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<
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">Et lineam lateris A D, duplam æqualem eſſe
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ſemicircumferentiæ eiuſdem circuli: </
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toti circumferentiæ eſſe æqualem.</
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enim, vt lib. </
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cumferentijs ſint proportionales, erunt quo que ſemidiametri
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rentijs, & </
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<
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ſupradicta tertia proportionalis ad AD, ita Quadrans BD, ſemidiametri AD, ad
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Quadrantem ſemidiametri A E. </
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oſtenſa Quadranti BD; </
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meter AE; </
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">EX his quoque infertur, ſi duæ rectę N, O, in præcedenti figura eandem
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proportionem habeant, quam AD, AE, minor autem O, ſtatuatur ſe-
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midiameter circuli alicuius, maiorem N, æqualem eſſe arcui Quadrã-
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tis illius circuli.</
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enim ſit AD, ad AE, vt N, ad O; </
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O. </
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midiametri O, vt lib. </
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AD, ad N, vt Quadrans ſemidiametri AE, ad Quadrantem ſemidiametri O. </
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