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For a simply connected convex polyhedron , that is, shapes that are topologically equivalent to a sphere,
F - E + V = 2
where F = faces, E = edges and V = vertices.
For shapes that are topologically equivalent to a sphere with one hole in it (torus or doughnut shape),
F - E + V = 0
For shapes that are topologically equivalent to a sphere with two holes in it
F - E + V = -2
For shapes that are topologically equivalent to a sphere with three holes in it
F - E + V = -4
and so on.
What else can I help you with?
What is the similar between edges and faces and corners?
In a polyhedron, there are edges, faces, and corners. The thing that is similar, or common, between the edges, faces, and corners are the vertices.
How many corners edges and faces does a cylindar have?
Zero corners and edges, and a cyllindar has two faces.
How many edges corners and faces does a cubiod have?
12 edges 6 faces 8 corners
How many faces corners and edges has a cylinder?
A cilinder has: 3 faces, 0 corners and 2 edges.
How many faces edges and corners does a heptagonal pyramid have?
Faces = 8 Edges = 14 Corners = 8
What is the similar between edges and faces and corners?
In a polyhedron, there are edges, faces, and corners. The thing that is similar, or common, between the edges, faces, and corners are the vertices.
How many faces and edges and corners does a cube have?
A cube has 6 faces, 12 edges, and 8 vertices (corners.)
How many face edges and corners does a pyramid have?
A pyramid has 5 faces, 5 corners and 8 edges corners and faces are always the same
How many corners edges and faces does a cylindar have?
Zero corners and edges, and a cyllindar has two faces.
How many edges corners and faces does a cubiod have?
12 edges 6 faces 8 corners
How many edges faces and corners does a triangular prism have?
5 faces 9 edges 6 corners
How many faces edges and corners does a cuboid have?
Cuboid has : 8 corners (vertices) 12 edges 6 faces
How many faces corners and edges does a triangular prisim have?
5 faces 6 corners 9 edges
How many faces corners an edges does a rectangular prism have?
6 faces 8 corners and 12 edges
How many faces corners and edges has a cylinder?
A cilinder has: 3 faces, 0 corners and 2 edges.
How many corners faces edges in a rectangular prism?
It has 8 corners, 6 faces and 12 edges
How many faces edges and corners does a heptagonal pyramid have?
Faces = 8 Edges = 14 Corners = 8
