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

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5[Figure 5]

Geometricæ quædam operationes,
quæ faciunt ad arcium ſeu pro-
pugnaculorum fabricam.

CAPVT PRIMVM.

QVvm inſtituerim docere modũ
delineandi ac conſtruendi pro-
pugnacula, necnon & caſtrame-
tandi, aliaq́; peragendi quæ ad ar-
tem militarem pertinent: in qui-
bus docendis occurrit vt qua-
rumdam geometricarum ope-
rationum ſit vſus creberrimus: quàm breuiſſimè fieri
poterit eas explicabo, quæ mihi magis neceſſariæ vide-
buntur.

OPERATIO PRIMA.

Data linea recta, & in ea puncto, abeo
puncto deſcribere angulum rectilineum æ-
qualem angulo rectilineo dato.

Sit linea AB, & in ea punctum C: angulus autem re-
ctilineus datus ſit DEF. Circini pedem figo in puncto
E anguli DEF, & cum altero pede deſcribo circuli por-
tionem ſupra angulum DEF, quæ erit arcus GH: & cum
eadem circini apertura, figendo pedem immobilem in
puncto c, alterius pedis ope deſcribo arcum IK ſupra

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Scan	Original
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Scan	Original
41	33
42	34
43
44	35
45
46	37
47	38
48
49
50	39
51	40
52	41
53	42
54
55	43
56
57	45
58	46
59
60	47
61
62	49
63	50
64
65	51
66	52
67	53
68	54
69
70	55