Pentagonal Prism

[Val_gal]

How many obtuse angles in a pentagonal prism?

 

[Ishuda]

How many obtuse angles in a pentagonal prism?

Count them if you don't know what a pentagonal prism is.
https://www.google.com/search?q=pen...&ei=PzoUVYacNPHksASAsoLQCA&sqi=2&ved=0CEQQsAQ

 

[Val_gal]

I think its 4. Is that correct?

 

[Ishuda]

I think its 4. Is that correct?

If by pentagonal prism you mean a semiregular, i.e. uniform, pentagonal prism, then the base and top are a regular pentagons, that is sides are equal and the interior angles are equal.

If, instead you mean the top and bottom are possibly irregular pentagons, then the only restriction is that the interior angles add up to 540 degrees which would mean that there must be at least 0 obtuse angles but may be more than that.