Assertion: polyhedron's face | /r/HasProperty | pentagon
Facets:
Source sentences:
text: Regular polygons of six or more sides have only angles of 120° or more, so the common face must be the triangle, square, or pentagon.
text: One face is a heptagon (usually regular), and the remaining seven faces are triangles (usually isosceles).
text: A consequence of Euler's polyhedron formula is that a Goldberg polyhedron always has exactly twelve pentagonal faces.
text: They are defined by three properties: each face is either a pentagon or hexagon, exactly three faces meet at each vertex, and they have rotational icosahedral symmetry.
text: And the faces of a truncated icosahedron are pentagons and hexagons
text: Note that the 12 faces of the dodecahedron are pentagons.