Assertion: polyhedron's face | /r/HasProperty | triangular
Facets:
Source sentences:
text: Flexible Polyhedron"(@MathWorld) just says "Connelly (1978) found the first example of a true flexible polyhedron, consisting of 18 triangular faces (Cromwell 1997,
text: While a triangular prism can have equilateral triangle faces, it has more faces that are quadrilateral (or rectangular).
text: This polyhedron has 120 triangular faces, 180 edges, and 62 vertices.
text: A pyramid is any three-dimensional polyhedron where the faces other than the base are triangular and converge at one point, called the apex.