Clavius, Christoph
,
Geometria practica
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LIBER OCTAVVS.
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tum punctum D. </
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">Eadem ratione, ſi ſuper baſem C D, triangulum conſtruatur
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C D E, triangulo B C D, æquilaterum ordine prædicto, ita vt latus D E, lateri C B,
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& </
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<
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">latus CE, lateri BD, æquale ſit, inuentum erit aliud punctum E, per quod cir-
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cumferentia incedat. </
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<
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">Atque eadem arte reperietur aliud punctum F, per trian-
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gulum DEF, triangulo E D C, æquilaterum, &</
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<
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<
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xml:space
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">Eodem modo ex altera parte
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reperietur aliud punctum G, per triangulum A B G, triangulo B A C, æquilate-
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rum, & </
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<
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<
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">Si igitur eligantur tria puncta, ita vt rectæ ea connecten-
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tes conſtituant quaſi angulum rectum, qualia ſunt tria puncta A, C, D, & </
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<
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proximis A, C, ad quo dcunque idem interuallum bini arcus deſcribantur, & </
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ex proximis C, D, binialij; </
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">ac per interſectiones horum arcuum rectæ lineæ
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emittantur, ſecabunt ſeſe in centro H, &</
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<
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cta G, B, D, quamuis angulus D B G, acutus ſit. </
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E, F, &</
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metri Rhombi ſupra latus, vellateris ſupra diametrum (quando illud
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maius eſt) vna cum vno Rhombi angulo: </
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metri rectanguli ſupra vtr umlibet laterum inæqualium, vna cum an-
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gulo, quem diameter cum eo latere facit, vel vna cum proportione
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eorundem inæqualium laterum: </
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boidis ſupra vtrumuis laterum inæqualium, vel vtriuſuis inæqualium
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laterũ ſupra diametrum (quando illud maius eſt) vna cũ vno angulo
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Rhomboidis, & </
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facit, vel inſuper cum proportione duortum laterum in æqualiũ; </
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dratum ipſum, Rhombũ, Rectangulũ, & </
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