mathematics

2. three-dimensional geometric shape that tapers smoothly from a flat base to a point called the apex or vertex
3. three-dimensional solid object bounded by six square faces, facets or sides, with three meeting at each vertex.
5. a polygon with three edges and three vertices.
7. lines in a plane which do not meet;

1. a polygon that is equiangular and equilateral
2. a convex polyhedron bounded by six quadrilateral faces, whose polyhedral graph is the same as that of a cube
4. A plane figure bounded by one curved line
6. a six-sided polygon