Assertion: prism's base | /r/HasProperty | polygon
Facets:
value: in order to be a "prism"
type: PURPOSE
value: both
type: DEGREE
value: literally
type: MANNER
Source sentences:
text: Both shapes fall under the large category -- polyhedrons -- because the sides and bases are polygons.
text: In the applet at the top of the page, select the different examples and realize that the bases of a prism can be literally any polygon.
text: The bases can be a triangle, square, rectangle or any other polygon.
text: In the very special case of a right polyhedral prism, the bases are polygons and the lateral faces are rectangles.
text: A solid with parallel congruent bases which are both polygons.
text: In order to be a "prism" and not a "cylinder" the bases should be polygons.