Stevin, Simon
,
Mathematicorum hypomnematum... : T. 4: De Statica : cum appendice et additamentis
,
1605
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2 LIBER STATICÆ
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<
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xml:space
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xml:space
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dum eſt, & </
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<
s
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">cujusq́ue gravitatis centrum, per 3 propoſit. </
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veniendum: </
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<
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ctaq́ue E F jugum , hinc duo quadrãgula
<
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xml:space
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z. lib. Euclid.</
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ma æquæalta cõſtituenda, ut G H I K & </
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<
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lia triangulis, illud quidem A C D hoc vero A C B, de-
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<
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G. lib. Euclid.</
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nique jugo F E in N ita ſecto, utradius N E ſit ad radium
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N F: </
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tatis centrum eſſe dico.</
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<
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xml:space
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<
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</
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<
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<
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<
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<
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xml:space
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">Ductâ A C, centrum gravitatis trianguli A C B,
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per 1 propoſitionem, inveniendũ ſit vero F: </
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quadranguli A C D E, per 1 hujus exemplum, ſitq́ue
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G, & </
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lelogramma æquealta conſtituenda, ut H I K L & </
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HIM N, quorum illud quadrangulo A C D E iſtud
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vero triangulo A C B æquetur. </
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<
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xml:space
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diviſo in O, ut radius O F ſitad radium O G; </
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admodum I K ad IM: </
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trum eſſe ajo.</
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<
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</
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<
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</
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<
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xml:space
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">PRAGMATIA.</
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<
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<
s
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xml:space
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">Ductâ A C gravitatis centrum trianguli A C B,
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per 3 propoſit. </
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quinquanguli A C D E F, per 2 exemplum hujus,
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eſtq́ue H. </
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gula parallelogramma æquealta fabricanda ſunt, ut
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I K L M æquale quinquãgulo A C D E F, & </
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æquale triangulo A C B: </
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ut P G radius illam rationem habe
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at ad P H radium;
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</
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eſſe dico. </
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<
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xml:space
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tilateris planis planiſſime eadem eſt.</
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rallelogramma æquealta mutatur, poſſe tamen abſque transfiguratione hujuſ-
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modirem expediri: </
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