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61[Figure 61]
quadraticæ.
In illa enim V X, ſic ſecatur in ℟,
centro grauitatis quatuor ſolidorum ſimul, vt V ℟,
ſit ad ℟ X, vt 3. ad 2. In 2. vero vt V 2, ſit
ad 2 X, vt 2, ad 1, nempe vt 3, cum tertia par-
te, ad 1, cum duobustertijs. Ergo qualium V X,
eſt 5, talium V ℟, eſt 3, & V 2, eſt 3, cum ter-
sia parte; ℟ 2, tertia pars; & qualium V X, eſt
15, talium V ℟, eſt 9; V 2, 10; & ℟ 2, vnitas.
centro grauitatis quatuor ſolidorum ſimul, vt V ℟,
ſit ad ℟ X, vt 3. ad 2. In 2. vero vt V 2, ſit
ad 2 X, vt 2, ad 1, nempe vt 3, cum tertia par-
te, ad 1, cum duobustertijs. Ergo qualium V X,
eſt 5, talium V ℟, eſt 3, & V 2, eſt 3, cum ter-
sia parte; ℟ 2, tertia pars; & qualium V X, eſt
15, talium V ℟, eſt 9; V 2, 10; & ℟ 2, vnitas.