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

Table of contents

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[361.] THEOR. LXI. PROP. LXXXXI.
[362.] SCHOLIV M.
[363.] MONIT V M.
[364.] LEMMA XVI. PROP. XCII.
[365.] PROBL. XVI. PROP. XCIII.
[366.] SCHOLIVM.
[367.] PROBL. XVII. PROP. XCIV.
[368.] PROBL. XVIII. PROP. XCV.
[369.] PROBL. XIX. PROP. XCVI.
[370.] COROLL.
[371.] SCHOLIVM.
[372.] THEOR. LXII. PROP. XCVII.
[373.] THEOR. LXIII. PROP. XCVIII.
[374.] COROLL. I.
[375.] COROLL. II.
[376.] THEOR. LXIV. PROP. IC.
[377.] COROLL.
[378.] PROBL. XX. PROP. C.
[379.] LIBRISECVNDI FINIS.
[380.] Pag. 53. Coroll. I. ita reſtituendum.
[381.] Pag. 59. poſt Coroll. adde ſequens SCHOLIVM.
[382.] Pag. 61. poſt Coroll. II. COROLL. III.
[383.] VINCENTII VIVIANI AD LIB DE MAX. ET MIN. APPENDIX.
[384.] MONITVM.
[385.] LEMMA I. PROP. I.
[386.] LEMMA II. PROP. II.
[387.] COROLL.
[388.] THEOR. I. PROP. III.
[389.] THEOR. II. PROP. IV.
[390.] LEMMA III. PROP. V.
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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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