Viviani, Vincenzo, De maximis et minimis, geometrica divinatio : in qvintvm Conicorvm Apollonii Pergaei

Table of contents

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[331.] SCHOLIVM.
[332.] THEOR. XLVI. PROP. LXXIII.
[333.] THEOR. XLVII. PROP. LXXIV.
[334.] MONITVM.
[335.] LEMMA XIV. PROP. LXXV.
[336.] SCHOLIVM.
[337.] LEMMA XV. PROP. LXXVI.
[338.] THEOR. XLVIII. PROP. LXXVII.
[339.] MONITVM.
[340.] THEOR. IL. PROP. LXXVIII.
[341.] ALITER.
[342.] COROLL. I.
[343.] COROLL. II.
[344.] THEOR. L. PROP. LXXIX.
[345.] THEOR. LI. PROP. LXXX.
[346.] SCHOLIVM.
[347.] THEOR. LII. PROP. LXXXI.
[348.] SCHOLIVM.
[349.] PROBL. XV. PROP. LXXXII.
[350.] COROLL.
[351.] THEOR. LIII. PROP. LXXXIII.
[352.] THEOR. LIV. PROP. LXXXIV.
[353.] THEOR. LV. PROP. LXXXV.
[354.] THEOR. LVI. PROP. LXXXVI.
[355.] THEOR. LVII. PROP. LXXXVII.
[356.] THEOR. LVIII. PROP. LXXXVIII.
[357.] THEOR. LIX. PROP. LXXXIX.
[358.] THEOR. LX. PROP. LXXXX.
[359.] COROLL.
[360.] SCHOLIV M.
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page |< < (153) of 347 > >|
339153 prop. 7. huius) ipſum erit minus aggregato extremarum poſt B F, F C; qua-
re primum aggregatum, ad rectam B C minorem habebit rationem, quam
ſecundum aggregatum ad eandem B C, ſed primum ad B C eſt vt 118. App.270[Figure 270] gatum triangulorum A E B, D E C ad triã-
gulum A C B, &
ſecundum ad eandem B
C eſt vt aggregatum triangulorum A F B,
G F C ad idem trian gulum A C B, quare
aggregatum A E B, D E C ad triangulum
A C B minorem habebit rationem quàm
aggregatum A F B, G F C ad idem trian-
gulum A C B, vnde aggregatum ex A E
B, D E C minus erit aggregato ex A F B,
G F C, ac propterea aggregatum triangu-
lorum ad punctum E erit _MINIMVM_.
Quod faciendum erat.
COROLL.
HInc, cum ſit vt ſubduplum ad ſubduplum, ita duplum ad duplum, ſi
compleantur parallelogramma B H, C I, ipſorum aggregatum erit
_MINIMVM_, &
c.
PROBL. IV. PROP. X.
Ijſdem poſitis, ac in præcedenti. Si datum ſit in linea B C,
quodlibet aliud punctum F inter inuentum punctum E, &
extre-
mum B, &
oporteat aliud in ipſa punctum aſſignare, quæ ſimul
exhibeant aggregata triangulorum ad verticem inter ſe æqualia.
271[Figure 271]
ERigatur B G perpendicularis, & æqualis ipſi B C, iungatur G C, &
per F agatur F H æquidiſtans B G, &
fiat vt B F ad F H, ita F H ad
aliam F I, &
circa diametrum B I circulus deſcribatur rectam G C ſecans
in H, &
L, & ex L ducatur L M parallela ad G B; dico punctum M eſſe
quæſitum, hoc eſt ſi producantur A F, A M rectam C D ſecantes in

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