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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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DE COTZLNEATIONIDuS
eroductum VI.
Angulus in Semicirculo ABC re-
etus CAt.
Demonstrario.
Tam ZIUS DAB = DBA _ DCB =DBCD
per Prod. 3. Ciap. 4. FrsO ClS ABC (ABD i
DBC.d- duobus ad diametrum DAB +. DCibo
F16. 4T.
C
Subdictamen I.
Angulus in seemento majore minor est re
eto: in fermento minore, major.
Subdictamen II.
Apuncto contactus per circulum ducta seu
cans, facit angulos cum ransente, ansu
lis in utroque sermento per fecantem
facto, alternatim sumptis equales. Vido
F7C. 42.
Productum VII.
n
Arca circuli cM aequalis Prlangulo
quo
rectansulo, cujus perpendieu.
lum est Radius Circuli, balis ve.
ro (non hypocenula) aequalis
circumterentix circuli.
Demonstratio.
Circum(cribacur circulo Polsgonum resu.
lare
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