Triangle - Wikipedia
https://en.wikipedia.org/wiki/Triangle
A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry. A triangle with vertices A, B, and C is denoted . In Euclidean geometry, any three points, when non-collinear, determine a unique triangle and simultaneously, a unique plane (i.e. a two-dimensional Euclidean space). In other words, there is only one plane that contains that triangle, and … Edges and vertices: 3 Internal angle (degrees): 60°
Edges and vertices: 3
Internal angle (degrees): 60°
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