Theodosius <Bithynius>; Clavius, Christoph
,
Theodosii Tripolitae Sphaericorum libri tres
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miarcu AB, erunt duo arcus AB, AC, minores ſemicirculo BAD. </
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eſt propoſitum.</
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<
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<
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angulo B, æqualis eſt; </
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<
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muniarcu AB, erunt duo arcus AB, AC, maiores ſemicirculo BAD. </
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eſt propoſitum. </
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<
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ſimul æqualia ſint ſemicirculo, erunt duo angu-
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li ſupra baſim duobus rectis æquales: </
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nora ſint ſemicirculo, erunt duobus rectis mino-
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res:</
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bus rectis maiores.</
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<
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circulo æqualia. </
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ergo duo anguli ad C, duobus ſint rectis æquales; </
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quoque duo anguli B, & </
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nora. </
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æquales; </
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anguli B, & </
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iora. </
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ctis æquales, eſtq́ue angulus B, maior angulo ACB;
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erunt anguli B, & </
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guli ſphærici, &</
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ſupra vnum latus duobus rectis æquales fuerint,
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erunt reliqua duo latera ſemicirculo æqualia: </
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vero duobus rectis fuerint minores, erunt minora
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ſemicirculo: </
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bus rectis, erunt ſemicirculo maiora.</
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