Hak cipta © 2009
MatematikaRia.com


Torus
Torus Facts 
Notice these interesting things: 

It can be made by revolving a small circle along a line made by another circle. 

It has no edges or vertices 

It is not a polyhedron 


And for reference: 

Surface Area = 4 × π^{2} × R × r 

Volume = 2 × π^{2} × R × r^{2} 

Note: Area and volume formulas only work when the torus has a hole! 



And did you know that Torus was the Latin word for a cushion?
(This is not a real roman cushion, just an illustration I made)


Torus in the Sky. The Torus is such a beautiful solid, this one would be fun at the beach !
Note: If you have more than one torus
they are called tori

More Torus Images
As the small radius (r) gets larger and larger, the torus goes from looking like a Tire to a Donut: 



