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# Title: Erhardi Weigelii Sacrae Caesar. Maiest. ut & Com. Pal. Sultzb. Consiliarii, Supr. Artium Archit. Directoris Saxo Ien. Mathemat. PP. totius Academiae Senioris, Philosophia Mathematica (shelfmarks Leibn. Marg. 65; ZEN Leibn. Marg. 65)
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ET DIVEROENTHS.
Demonstratio.
Concipiatur recta C F, ApA AB parallela
der postulacum juris archimerrier; ee apparebie
Seritas per Product. 5. Cia P. 3.
Producum TII.
Tlolcelium Triangulorum qui ad
balin tunc ansuli inter le lunt
qualCs.
Demonstratio.
Cum enim anculus radii cum circumteren
Clantringue sibi sit aequalis per noirlo Ervocar:
onguli vero arcus ADB. F18. 23. _ subcena AB.
Cmiliter aequales lineper Prod. L. hujas Situi sub-
crahantur ab illis, per poltulacum juris archime.
trici; relidui ad balin, nemDe Ci AB e Ci B A,
aequales remanebunt. 6). F. D.
Condictamen I.
Si Trianculi duo anguli aequales inter se
fuerint; 5 sub aequalibus anculis inter-
cexta latera equalia inter se erunt.
Scholion.
Alias non esset rerum quod in producto
demonstratur.
Condict. II.
Omne Trianculum agnilaterum est quos
aquiansulum