Assertion: regular polygon's side | /r/HasProperty | third one
Facets:
value: inside it
type: LOCATION
Source sentences:
text: One way to triangulate a simple polygon is based on the two ears theorem, as the fact that any simple polygon with at least 4 vertices without holes has at least two 'ears', which are triangles with two sides being the edges of the polygon and the third one completely inside it.