Full text: Bithynius, Theodosius: Theodosii Tripolitae Sphaericorum libri tres

475. CHRISTOPHORI CLAVII
BAMBERGENSIS E
SOCIETATE IESV

TRIANGVLA SPHÆRICA.
PRÆFATIO.

351-01

XPLICATIS ijs, quæ ad
triangulorum rectilineorum
ſcientiam, qua ex angulis no-
tis latera, & vicißim ex notis
lateribus anguli cognoſcũtur,
neceſſaria eſſe duximus; reli-
quum eſt, vt sphæricorum etiam triangulorum
doctrinam, qua arcus ex cognitis angulis, et con
tra, anguli ex arcubus notis inquiruntur, tra-
damus. Quamuis enim Menelaus, qui etiam
Mileus, nobilis ſcriptor, qui temporibus Traia-
ni Imperatoris floruit, vt auctor eſt Ptolemæus,
acutißimos tres libros de triãgulis ſphæricis com
poſuerit, non tamen eius ordinem nos in hiſce no
ſtris sphæricis triangulis ſequemur; propterea
quòd & plurimas eius propoſitiones, licet iucun-
dißimæ ſint, mira{q́ue} eruditione refertæ, tãquam

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