Triangle
1. Not always true!
Sum of 3 internal angles = Π =180 degrees
depends on which geometry:
Euclidean / non-Euclidean / Riemann
2. True always!
Sum of 3 exterior angles = 2 Π = 360 degrees
Showing posts with label Non-euclidean geometry. Show all posts
Showing posts with label Non-euclidean geometry. Show all posts
Sunday, 31 March 2013
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