No. By definition a pentagon must have 5 edges. An irregular pentagon is a pentagon that has edges with lengths of different sizes. The internal angles of all vertices will not be identical in an irregular pentagon.
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A pentagon has 5 corners and 5 edges/sides.
A pentagon can be regular or irregular.
pentagon
an irregular pentagon has five sides but the sides are not equal
A pentagon can have:none (regular or irregular pentagon)one, two or three right angles (irregular pentagon).