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 Description  
 Cylinder:  A three dimensional object with two parallel, congruent, circular bases.
A cylinder is the shape of a soup can. If we cut off the top and bottom of the can and vertically cut the remaining part we have the following pieces:

These two circles are from the top and bottom of the cylinder.



This rectangle is the 'tube' part flattened out.






 

 

The figure at the right shows an oblique cylinder. The bases are parallel but the segments connecting corresponding points are not perpendicular to the bases. In other words, they do not form a right angle with either base, making the cylinder appear slanted.