Apian, Petrus
,
Instrvmentvm Sinvvm, sev primi mobilis
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GENVINVS VSVS
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nemus in puncto I. </
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">Ita uia ſiue ingreſſu duplici idem nobis repertum eſt, lateraliter ta-
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men, unde etiam illud patuit, quod citra diſcrimen lateraliter operanti numerus minor
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accipi queat, tam in diametro AB, quàm in limbo BC, ubi ſi minor numerus è diame
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<
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tro mutuatur, tum maior erat ex arcu ſumendus:</
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maiore numero accepto è diametro, mi
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nor in arcu BC legendus. </
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<
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">Lateralis autẽ ideo uocatur, quia utri numeri in quadrã
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tis lateribus inueſtigentur, non autẽ in area. </
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<
s
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echoid-s724
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">Arealis uero ingreſſus eſtis, quando nu-
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merus cognitus in area quadrantis ſumitur, qui idem generaliter quo & </
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<
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nor eſſe debet, alius autem, hoc eſt, maior, ſiue in diametro ſiue in limbo pro agentis arbi
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<
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trio. </
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">20, quibus cũ areatim ingredi ue
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lis, 20 ergo numerus minor cum ſit, neceſſum eſt, ut in area requiratur, 30 uero ſi in
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diametro AB (cuiuſmodi in figura quarta ſequenti per literam E docetur) capiuntur,
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30 unione´ exprimuntur, & </
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<
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">filum denuo ab A uerſus C promouetur, donec unio 20 a-
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reæ gradum, id eſt, 20 lineam à diametro AC diſsitam teneat, tum ſecari à filo gradus
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43. </
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<
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<
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">conſpiciuntur, id quod in quarta figura punctum F arguit, hic autem eſt
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numerus lateralis alter, quem quærebas. </
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">Potes uiciſsim lateralem notum ueluti gradus
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30 in limbo requirere (ſicuti figura quinta per G punctum inſinuat, filum´ eo dirigere,
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quo directo ſi margaritam in 20 gradum areæ figis, iterum´ filum diametro AB in-
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tendis, cernis ab unione ſimiliter gradus 43. </
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<
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">in pũcto D, ut antea oſtẽdi. </
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<
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">Is autem
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lateralis ſecundus eſt, antea incognitus, ueluti habetur palam in figura quinta. </
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per ſecundam, tertiam, quartam & </
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per ſextam diſces.</
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