count the corners!
Penta=5, five sides=5 angles, five angles equal 5 intersections. Some of these may be perpendicular, but not necessarily.
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A pentagon has five sides.
it has 5 sides A pentagon has five sides. "Regular" means that they are all the same length. A pentagon has 5 sides. 5 There are 5 sides in a regular pentagon a plane figure with five sides and angles There are 5 sides 5 5 sides
5 SIDES
An octagon has 8 sides. A pentagon has 5 sides. So an octagon has 3 more sides than a pentagon.
An irregular pentagon can. A regular pentagon cannot.