No, a pentagon is a polygon with 5 sides.
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A regular 5 sided pentagon has no perpendicular lines
A pentagon can have 0, 1 or 2 pairs of parallel lines. It can have 0 to 4 lines perpendicular to an adjacent line. A rhombus must have two pairs of parallel lines and none of them may be perpendicular to any other.
A regular pentagon does not. An irregular pentagon can.
A perpendicular can have from none to three perpendiculars.
A regular pentagon has zero perpendicular sides. If it is irregular, it could have as many as 2 or 4 perpendicular sides.