Do the mormons believe that jesus died on a pole instead of a cross?

No, Mormons believe that Jesus was crucified on a cross, just like most other Christians. Mormons believe and study the Bible throughly, so the accounts there are what we believe. Mormons dont however use the cross as a religious symbol like many other religions...

Perhaps you are thinking of the Jehovah's Witnesses? They do not believe that Jesus died on a cross.