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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)
# Folio 221, page id 79876922X:0717
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am Bb.
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ad p
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VFRTTATIS SPFCIMICA
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nanon
u
Anatreico proeressim additis correctionibus.
felicicer sic abloluto, Facile munc est, erroribuso-
missis recta via retrocedere, et Synthelin (uC-
cinccam ejus quod efficiendum guarebatur, ex
Analyliprolixa concinnare. Nempe: Dacum
punctum A. Comecte puncto B. initiale data:
recta, de Friangulim Plosceles aut aequilaterum
BFA. huic impore Basi: circulum ex B. deleribe
ad intercapedinem datx B C. a puncto F pet
centrum B, Oppolitae circumferentia, duc Oc-
currentem rectam F D, cuis circulo ex F delcripto
ad incercapedinem FD. advertus a aegualis ra-
dius FF per A. respondeat: _ AR. erit recta
tactenus quaesita.
c
e
de
Demonttratio Synthetica.
Cam enIM F D SIC = IDEEL B. _ F A = Ip(P FB.
trueturam; erit BDiplia B. etiam aequalis,
uclid ax, 8. Aequi BCi = est ipE B D. per
DeF. 25. rso BC est = ipB P. F. CiOn leq. ip (I AC∞
e A . e16.
Syllosilmus.
Ouacune recta est = ei, quae recta daca ae qua
EHZ
illa quoque aequatur datae recta (Per aX3.)
Atqui recta AF elt = ei, (nempe iosI BD.) qua
aequatur rectae BCi. (per Demonstrationem prae-
miltam) Prsorecta A F est = ip (i recta data B Cio
cuod proponebatur demonstrandum.
Ale
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