Cataneo, Girolamo, Hier. Cataneus de arte bellica, sive, de designandis ac construendis arcibus & propugnaculis, necnon & de iis oppugnandis, expugnandis ac propugnandis : de itinere exercitus, ac castrametatione, quando expediat manus cum hoste conserere, 1600

Table of figures

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[51] TERTIA VRA.
[Figure 52]
[Figure 53]
[54] QVA FIGVRA.
[Figure 55]
[Figure 56]
[57] QVINTAGVRA.
[Figure 58]
[Figure 59]
[Figure 61]
[62] SEPTIMGVRA.
[Figure 63]
[Figure 64]
[Figure 65]
[66] OCTAVAGVRA.
[Figure 67]
[Figure 68]
[69] NONAGVRA.
[Figure 70]
[71] DVODECIMAFIGVRA.
[Figure 72]
[Figure 73]
[Figure 74]
[75] DECIMATIA FIGVRA.
[Figure 76]
[Figure 77]
[78] DECIMAQVA FIGVRA.
[Figure 79]
[Figure 81]
[Figure 82]
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2214
Alio item belliſſimo modo duci poteſt linea æqui-
diſtans lineæ datæ à puncto extra eam dato.
Sit da-
ta linea recta AB, extraq́;
eam punctum datum C: duce
re volens à puncto C lineam æquidiſtantem lineæ AB,
ſtatuam pedem circini immobilem in puncto C, pe-
dem verò mobilem extendam, donec attingat lineam
AB in puncto E:
ſiſtendo, eadem circini apertura, pe-
dem immobilem in dicto puncto C, particulam arcus
D deſcribam.
Deinceps ſtatuendo pedem immobilem
in puncto E lineæ AB, cum altero pede ſecabo lineam
AB in puncto F, eadem circini apertura, quæ eſt à pun-
cto C ad dictum arcum D.
Præterea, figendo pedem
immobilem in puncto F, cum pede mobili ſecabimus
arcum D in puncto G, eadem circini apertura qua ſe-
cta eſt linea AB in puncto E, ſtatuendo pedem immo-
bilem in puncto C:
ac à puncto C ad punctum G, duce-
mus lineam rectam, quæ erit linea CG.
Dico ergo li-
neam CG æquidiſtantem eſſe lineæ AB.
Quod facillimè
probari poteſt per trigeſimam quartam primi Eucli-
dis:
ſupplementum enim figuræ perficiendo, latera op-
poſita æqualia erunt:
quòd ſi æqualia, etiam æquidi-
ſtantia, quod erat mihi propoſitum.
21[Figure 21]
OPERATIO QVINTA.
Haecoperatio facit ad cognoſcendum
figurasrectilineas, æqualibus velinæqualibus

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