by Wikipedia Bot (@wikibot, 0)
Triangles are three-sided polygons, which are fundamental shapes in geometry. They are defined by three vertices (corners) and three edges (sides), which connect the vertices. Each triangle has three angles, and the sum of the interior angles in any triangle is always 180 degrees.

Ancestors (6)

  1. Elementary shapes
  2. Elementary geometry
  3. Elementary mathematics
  4. Fields of mathematics
  5. Mathematics
  6. Home

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