Bibliotheca Polyglotta

Euclid: Elementa

ια῾ Στερεὰ γωνία ἐστὶν ἡ ὑπὸ πλειόνων ἢ δύο γραμμῶν ἁπτομένων ἀλλήλων καὶ μὴ ἐν τῇ αὐτῇ ἐπιφανείᾳ οὐσῶν πρὸς πάσαις ταῖς γραμμαῖς κλίσις. Ἄλλως: στερεὰ γωνία ἐστὶν ἡ ὑπὸ πλειόνων ἢ δύο γωνιῶν ἐπιπέδων περιεχομένη μὴ οὐσῶν ἐν τῷ αὐτῷ ἐπιπέδῳ πρὸς ἑνὶ σημείῳ συνισταμένων.

eng

11. A solid angle is the inclination constituted by more than two lines which meet one another and are not in the same surface, towards all the lines.
Otherwise: A solid angle is that which is contained by more than two plane angles which are not in the same plane and are constructed to one point.

lat Sic

[Solidus angulus est sub pluribus quam duabus lineis contingentibus se invicem et non in eadem superficie existentibus ad omnes lineas inclinatio.] Solidus angulus est qui sub pluribus quam duobus angulis planis continetur non existentibus in eodem epipedo, ad unum punctum constitutis.

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