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It has parallel sides, but not perpendicular.
Mutually perpendicular, adjacent sides.Mutually perpendicular, adjacent sides.Mutually perpendicular, adjacent sides.Mutually perpendicular, adjacent sides.
Parallel sides do not intersect. Perpendicular sides intersect at a right angle.
A regular pentagon has zero perpendicular sides. If it is irregular, it could have as many as 2 or 4 perpendicular sides.
No but its diagonals are perpendicular