5
a pentagon is a 5 sided figure so 5 (if you mean sides, not bases)
ten
2
a pentagonal prism has 2 bases
pentagon
A regular pentagon does not have any parallel sides. In contrast, a pentagonal prism has two parallel and congruent bases.
a pentagon.... it is pretty self explanatory.
One base, which is a pentagon.
There is 540 in a pentagon.
One side in its base. !!!! However, a regular pentgon has five(5) equal length sides. One of those sides is the base line.
A pentagon has five sides.
A pentagon has 5 diagonals.