Edge is probably not the best word to describe it. Planes have zero thickness, and to me the word 'edge' implies something that takes up space. It's something like describing a point as a really, really, really tiny circle. That's not correct; a point has zero area-- not just a tiny bit of area.
Two.
A frustum of a cone, or a sphere sliced by two planes are a couple of examples.
zero-dimensional examples: Endpoints of edges (vertices and corners) Zero-dimensional figures lie in two-dimensional planes. one-dimensional examples: Edges of figures (sides and arcs) One-dimensional figures lie in two-dimensional planes.
An edge is a concept that applies to 3-dimensional objects and is the intersection of two planes that form boundaries of the object. None of these apply to a circle so the answer must be none.
A prism is a 3-dimensional shape with the following properties: It has 2 identical, polygonal faces whose planes are parallel. The corresponding edges of the polygons are connected by rectangular faces.
Edges are one dimensional objects where two planes meet.
Not necessarily.
It is the intersection of two planes or the line joining two vertices.
Yes, a polyhedron is a solid bounded by polygonal regions, which are the faces of the polyhedron. These faces are formed by the intersection of planes, and the edges of the polyhedron are the line segments where these faces meet. The vertices are the points where the edges converge. Thus, a polyhedron is defined by its flat faces, straight edges, and vertices.
Many solids. Some are: A sphere intersected by two planes, An ellipsoid intersected by two planes, Any blob intersected by two planes, A toroid (doughnut) with a wedge removed, A double-cone intersected by two planes, A cylinder.
There are 12 edges on a cube. There are 5 flat surfaces (planes) on a cube as well.
A sphere with two slices cut out of it by planes. A torus (doughnut) with a chunk taken out of it.
There are many possible answers: A cylinder A cone sliced by two planes perperndicular to its axis A toroid (doughnut) sliced by a plane vertical to its axis. A sphere sliced by two planes An ellipsoid sliced by two planes A paraboloid sliced by two planes etc.
Two.
zero-dimensional examples: Endpoints of edges (vertices and corners) Zero-dimensional figures lie in two-dimensional planes. one-dimensional examples: Edges of figures (sides and arcs) One-dimensional figures lie in two-dimensional planes.
A frustum of a cone, or a sphere sliced by two planes are a couple of examples.
A tetrahedron is a triangular based pyramid that has 4 faces, 6 edges and 4 vertices