Table of Contents Table of Contents
Previous Page  287 / 798 Next Page
Information
Show Menu
Previous Page 287 / 798 Next Page
Page Background

/

Liber ·

V.

.

1

s

7

ell:

quadratum redud:ionis ,' in quo mira facilime

~lis

trium confiíl:ant, facile hocquadrato petli-

rcgulas uium perficimus.

-~u

are

cut~ praxc~

om-

~1cmur.

.I'.1'mo

&

praxcs mapparum redulbiruni

nes Amh111eticz fupcrion

Hbro

exphcara:,

m

re-

meo fwlc ufurpantur.

-

·1,7

1

:l

_'?o

I

)

/

I

I

1/

--t

----

'/

/

.._

- --'

~

I

--- -~C_:

,_ lJ

~~

/

/

1/

r--

,]'j

.,

n

17

/

-t-

'

¡;

1

1/

v

1

J

-...., bo

J

I/

_,

,___ ._

~

N5

¡

I/

'/1

a.o

lf

·~

/

1/

l"i

fo

/

1

_,v

·.1

'- .A 5

I/

1

1

1

f/

'-i,i,

-·~

~

11

1/

I/

\

I/

,__. e;;

•1¡

12,

I

1/

I~

,_

-T

3

I/

[,/

" I

,,,D

,_

J

_._,_

/

4f/

-

V

\

L...-

/

J

/

/

~

,;

,

__

,_,_

-- :-

1/

5-/

,,~-

o

(. 1

J

V

/

v

/

UI

V

\..,

J

=¡.,....

/

J

/

6

==--=

--

--

'

'-'~

_,_,_

I

/

/

-'-'-

'

/

J /

~/ .

~

--

,

__

1. o

f

I

7

f7 /

'__.,.V'

~--

I

!t :

.(j i/

/'[....-

_ 1..- -

'~

... !.,....-'--

A

Deícribantr quadrarum,aut reltangulum, cujus

latera dividanrur in panes a:qualcs; ducancur per

lingul.s linea: 12ccribus parallela: , ira ur romm

quadramm

in

quadramfa dividacur. Eritquc unum

ejus lacus AC longirud1nibus, aliud AB lacicudi–

nibus addi6l:um;charad:crcs pocerun\ apponi qui–

cunque,ica

ut

imcrvallaqua:cumque pro gradibus,

pro minmis , vel pro

¡.

r..

10 minutis pro mil–

liaribus prout res tulcrir aíf.1mi poffinc.

Scala

univcrf·\ls Cupra d

efcripra huic etiam

quadraco

accommoderur.Si

ncmpe fumas 10,verbi

graria,incer\lallaquadrari pro lineaAB fcala: uni–

verfalis.

Dcfcribe parirer ex puna:o

A

ut

cenero qua–

dramem circuli, qucm divides in

90

parresa:qua·

les,

&

ne fi r conf .Cio , porerum divifioncs qua–

drantis, in limbo quadrari defcri?i. Ducamur irem .

,

r

-¡-

-

H-'

•1

.:.211

rutll~i

fewndum •ngu!um inclinarionis , quem

cum mend1ano comprchendunr, ira uc primus

rumbus cum meridiano A B angulum grad.

11~

comprehendar. Secundus grad.

u

7

&c.

Addarur in cenero A regulavolubilis, divifa in

panes a:qualcs imervallis quadracis,quare vcllem

quadramm a!feri agglutinari , cum regulavolubili

circa cencrum.

Égo addo huic quadraco lineam lacicudinum,

qu:i: defmnimr ex mappa redulta, funrqucfecan–

ces dcfumpta: non ex (cala illa majori,fedex quar•

ta ejus parre, fuppofira fcilicer pro uno gradu :i:·

quaroris finca AC.

~tia

ramcn chma non polfcc

caperc omnes fecantes additas in unam lineam.

Eam divido in piures lineas,prirnacontibet

1

j

gr.

incipicndo.

a

primo. Secunda roridem,incipiendo

a

quimo, cenia incipiendo

a

10,

& ira deinceps•

.

1!~~~$~1!1!51~~!:!l~~~~~~~~:11s¡~~ij!$Jt:1~~lil~!$l:n~E!áiii1$lil~m~mm~!l·~~iiril~~

P R O P O S 1 T I O

X V.\

Mi/liaría longiwdinis , in grad111

&

mimtta reducere

&

vici¡ftm,

Norandum eA: milliaria longirudinis extra

:e–

quaroremCemper pauciora effc minutis longimdi·

nis,quia ncmpe milliare in parallelo majus eA: mi–

nuto, ideoque fciendum eA: in qLia latirudine fuir

navigatum. Supponamus ergo navigamm effe

a

trigefimo gradu ad quadragefimum , habcrique

60 0

milliaria longirudinis. Numero in quadrati

rcdudionis latere loogitudinum incipiendo

~

pun–

llo A , decem gradus , cum navigado obrincat

. 10 gradus. Accipio imn dircino

ln

lineis latlrudi–

Tom•

///.

num creícenrium lo gradus, liimcndo

a

gradu

l.º

ad 40 , hoc imcrvallum cransfero

a

punélo

A,

~ti

idem latus longimdinis,lnvenioque

t.

gr.

.j(

ma

minuta. Poffcmquidem dicere

¡¡

1

o

~·~' ~

1

cÍ.d

tribus minucis , quot

dabu~r ~º? r:'

1

/~~:~~e~hanc regulam facilius perfic•o

111 1

P

i

..

d' ,

to. Nam

a

decimo gradu in

la~~~n º:~:~u~~::~

numero furforn afcendendo '.

P

be . .

diario 600 1nilliaria • nempe ita

lH

q~~dli

t

m~

. ,, ll

. "aleaé ,;uorrtuot vol11ero,uk1mo pt1nlfo>

mva

umv

-.

-.

Kk

llilitléf:f

o

ff)