Clavius, Christoph, Geometria practica

Table of handwritten notes

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320290GEOMETR. PRACT. LIBER SEXT. vel aliarum menſurarum. Capiatur linea A, palmorum, vel pedum 10. & c. & li-
nea B, palmi, vel pedis 1.
Inuenta C, media proportionali inter A, & B. 1113. ſexti. C, eſſe radicem quadratam, ſiue latus quadra-
209[Figure 209] tum, numeri A, 10.
Quoniam enim 2217. ſexti. tum rectæ C, æquale eſt rectangulo ſub A, &
B, comprehenſo:
Eſt autem hocrectangulum
10.
quod vnitas B, numerum A, 10. multipli-
cans procreet 10.
perſpicuum eſt, rectam C,
eſſe latus quadratum 10.
palmorum, vel pe-
dum, &
c. quod eſt propoſitum.
Rvrsvs inuentis inter A, & B, duabus mediis proportionalibus 3315. hui{us}.& E. Dico E, quæ minori B, propinquior eſt, latus eſſe cubicum, ſiue radi-
cem cubicam, numeri 10.
Quoniam enim cubus rectæ E, æqualis eſt 44Lemma 18.
hui{us}.
pipedo ſub quadrato rectæ B, &
ſub A, recta comprehenſo. Eſt autem hoc pa-
rallelepipedum 10.
quod vnitas B, ſe multiplicans faciat quadratum 1. &
quadratum 1.
multiplicans numerum A, 10. gignat 10. liquidò con-
ſtat, rectam E, eſſe latus cubicum 10.
palmorum, vel
pedum, &
c. quod eſt propoſi-
tum.
FINIS LIBRI SEXTI.
210[Figure 210]

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