5
5. 'Pent' means 5.
An edge of a 3-d pentagon is the intersection of two of its adjacent faces.
In a regular pentagon, the lines of symmetry are drawn from each vertex to the midpoint of the edge directly opposite the vertex, so there are five in all.
There is 540 in a pentagon.
A pentagon has five sides.
A pentagon has 5 diagonals.
A pentagon has five sides.
There are 5 angles in a pentagon.
There are five diagonals in a pentagon.
A pentagon has 5 sides
A pentagon has 5 sides