Definition:Euclid's Definitions - Book XI/6 - Inclination of Plane
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Definition
In the words of Euclid:
- The inclination of a plane to a plane is the acute angle contained by the straight lines drawn at right angles to the common section at the same point, one in each of the planes.
(The Elements: Book $\text{XI}$: Definition $6$)
Sources
- 1926: Sir Thomas L. Heath: Euclid: The Thirteen Books of The Elements: Volume 3 (2nd ed.) ... (previous) ... (next): Book $\text{XI}$. Definitions