Clavius, Christoph, Geometria practica

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10171LIBER SECVNDVS.11
Vt
H E, differentia Tangentium \\ angulorum obſeruationum # Ad FD, ſi- \\ num totum # Ita H E, vel F G, differen- \\ tia ſtationum # ad F D,
33
VFG
, differentia \\ Tangentium cõ- \\ plemẽtorum an- \\ gulorum obſer- \\ uationum, # Ad CE, \\ ſinum to- \\ tum # Ita F G, diffe- \\ rentia ſtatio- \\ num interfe- \\ neſtr{as}, # ad C E, \\ longitudi- \\ nem pro- \\ poſitam,
35[Figure 35]44
Vt
F G, differentia \\ Tangentium com- \\ plementorũ angu- \\ lorũ obſeruationũ # ad G C, Tangen- \\ tem complemen- \\ ti minoris angu- \\ li obſeruati # Ita F G, ad GC, \\ differentia ſta- \\ tionum inter \\ feneſtr{as}
1. Sit longitudo A B, & menſor in extremo A, conſtitutus videre non poſ-
fit
alterum extremum, niſi ad dextram ſiniſtramue
36[Figure 36] recedat vſq;
adD, punctũ, è quo vtrumq; extremũ
cerni
poſsit.
Eritigitur longitudo AB, menſori in
D
, exiſtenti poſita in tranſuerſum.
Quare ea per
problema
10.
inueſtigabitur.
2. Eodẽ modo, ſi mẽſor exiſtat in C, è directo lõgi-
tudinis
, ſed vel neutrũ extremũ, vel alterũ

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