Huygens, Christiaan
,
Christiani Hugenii opera varia; Bd. 2: Opera geometrica. Opera astronomica. Varia de optica
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.
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INVENTA.</
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<
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I.
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I.</
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gulum maximum inſcribatur, & </
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<
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xml:space
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bus reliquis triangula ſimiliter inſcribantur,
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erit triangulum primo deſcriptum duorum ſimul
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quæ in portionibus reliquis deſcripta ſunt minus
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quam quadruplum.</
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<
s
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Fig. 1.</
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B D; </
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hoc eſt, quod baſin & </
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<
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</
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<
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xml:space
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xima A E B, B F C. </
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<
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quadruplum triangulorum A E B, B F C ſimul ſumpto-
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rum. </
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<
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in puncto G. </
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in E puncto, erit utraque harum E A, E B, major dimi-
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diâ A B. </
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<
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xml:space
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druplum quadrati E B vel E A. </
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<
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ad quadr. </
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dratum quidem A B æquale eſt rectangulo quod à D B & </
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circuli totius diametro continetur, quadratum vero E B æ-
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quale rectangulo ſub eadem diametro & </
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igitur eſt B D quam quadrupla B G. </
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eſt quam dupla E F, quoniam hæc ipſi A B æquatur. </
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go patet triangulum A B C minus eſſe quam octuplum </
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