Theodosius <Bithynius>; Clavius, Christoph, Theodosii Tripolitae Sphaericorum libri tres

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10896 modo, quoniam ſimiles ſunt arcus BN, Gk, erit BE, alteri polo propior ma-
ior, quàm vt ſimilis ſit arcui Gk, ab eodem polo remotiori.
Itaque ſi in ſphæ-
ra maximus circulus aliquẽ circulum tangat, &
c. Quod erat demonſtrandum.
FINIS LIBRI III. THEODOSII.
AD LECTOREM.
POTERVNT, ſi placet, hæ duæ figuræ tribus illis propoſitionis
ſecundæ lib.
3. adiungi, vt omnes caſus lineæ perpendicularis FL, per-
ſpiciantur.
In prima namque harum figurarum ſegmentum inſiſtens
112[Figure 112] AFB, eſt ſemicircu-
lus, caditq́, perpendicu
laris FL, intra ſegmen
tum ADB:
In poſte-
riore autẽ eadem FL,
in ipſam circunferen-
tiam ADB, cadit,
exiſtente eodem ſegmen
to inſiſtente AFB, ſe-
micirculo;
quemadmo-
dum &
in tertia figura dictæ propoſitionis idem ſegmentum inſiſtens
AFB, ſemicirculus eſt, linea́ perpendicularis FL, extra ſegmentum
ADB, cadit.
Hoc, benigne lector, te latere noluimus.

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