It is the set of points, in 3-dimensional space, defined by the intersection of two planes which define faces of the shape.
cylinder
Spheres
sphere
There are lots of shapes: a sphere, an ellipsoid, a smoothed blob.
They are points where three or more edges meet.
3D shapes have edges, sides, and intersecting points
Cylinder
There are infinitely many shapes that do.
cylinder
Spheres
sphere
Cubes, cuboids, Trapezoid prisms, octahedrons
A cube has 6 faces
There are lots of shapes: a sphere, an ellipsoid, a smoothed blob.
none of them. The cube has parallel and perpendicular and os does the cuboid.
They are points where three or more edges meet.
cubes and rectangular prisms