Because that is how a polyhedron is defined.
Because that is how a polyhedron is defined.
Because that is how a polyhedron is defined.
A polyhedron.
It is so by definition.
Sphere
cube
312
No. A polygon is a 2-dimensional figure. A polyhedron is 3-dimensional.
It is a sphere which looks like a globe
A cuboid and a pyramid for examples.
A polyhedron.
NO!!! A triangle is a 2-dimensional shape of three sides; archaically a 'trigon'. A polyhedron is a 3-dimensional solid of many sides.