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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 141, page id 79876922X:0633
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PRACTLUM CIONETGURATORUM.
nm
1. + 1
ADE. F CID: AF. F. Cu per C ond. L. Produet. 1.
rujaS. FFGO AD. DB :: AF. BC
u
Condictamen.
Si plures basi parallelae duetae fuerint, erit,
ut DF. FA:: B G. C d. it a componendo,
invertendoque PA. DA.: E A. G A. (5
D d. DB:: F A. F. C. ErgO ex equo
DF. DB:: EO F C. Vicissim binc
BC, DF, FC parallelae erunt.
e
Subdictamen L.
Aquiangulorum Triancutorume proporcio
nalia sunt latera: C5 vicissim.
Scil. AD. DB:: AF. F. C.. E
AD. DF:: AB. BCi. d alternando
AD. AB:: DF. BC. e comp.
AB, ACa:: A D. AB. _ div.
DB. F. C1 :: AD. AL. _C.
Scibdictamen 2. F1g. 46.
In Triangulo rectangulo B AC. perpendieu-
lum ex Llo recto ad bypotenusam du-
ctum, secat Trianculum totum in duo
parrialia, eoti Cs inter se aequiangul.
Nam Llus Ci. toti ee minori parti; led
ZluS B. Eoci a majori parti, communis ett,
Elus aurem rectus omnibus inelt. Rrgo:
BD. D A:: D A. DC. BCCA =: ACI CiD.
e CiB. BA:: BA. BD.
dca