Five. (Even a non-regular pentagon has 5 diagonals).
If the question refers to sides than a regular pentagon has 5 sides.
five, if it's a regular pentagon.
A regular 5 sided pentagon has no perpendicular lines
5.
any regular pentagon has five lines of symmetry.
A regular pentagon has no parallel lines.
There are 5 lines of symmetry in a regular pentagon but a less amount in a irregular Pentagon
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If the question refers to sides than a regular pentagon has 5 sides.
five, if it's a regular pentagon.
A regular 5 sided pentagon has no perpendicular lines
5
Five.
Five.
5
5.
any regular pentagon has five lines of symmetry.