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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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240
DE: PRONORTIONE:
Idem desimilibus fguris, (praesertim p2-.
rallelosrammis. _ parallelepipedis. ) quod de:
Priansulis: est dictum, porro demonstratur ab
Fuclide risidii, Pro illustratione vero men-
eis, idem hic sub lumitur jure formalitatum uE
Teguitur.
Subdictamen I.
Si paralle lepixedum plano secetur, ad ver-
sis planis parallelo: partes erunt pa-
rallelexipeda, in quibus, directâ propor-
tione, ut basis ad basin superficialemi
ita solida pars ad Colidam.
Demonstratio.
Cum enim parallela plana formaliter co-
incidant, per Subdictamen Dictaminis. 18. huju5.
trabebune se hac parasselexipeda uc parallelo-
ramma similiter aftecta. per noul ervOcaU
atquitac ipta ita se habent; per Prodchujus.
ExGO. D. Fn D.
Subdictamen II.
Similia parallelepipeda solida quaecunque
diversa, tota. sub eadem aliitudi-
ne, inter se sunt ue bases (superfici
AleS.)
Eet luper aequalibus basibus le siltentia (0.
dicta similia, incer se sunt uc altitudines.