Five side is always a pentagon, but there's no pentagon that always has
exactly one right angle.
A regular pentagon has no right angles.
An irregular pentagon can have one, two, or three right angles, or none.
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A shape with five sides and one right angle is a pentagon. A pentagon is a polygon with five straight sides and five angles. One of these angles is a right angle, which measures 90 degrees.
a pentagon
A penagon is a shape with five sides and five corners.
Strictly speaking a pentagon is a plane figure with five straight sides and five angles, so yes, a pentagon can have one - or more - right angles. Imagine a rectangle with one of the corners cut off - that would have five sides and three right angles. .......... ............. ................ .................. .................. .................. ..................
A pentagon has fives sides, or if you mean a three dimensional shape, a pyramid has five sides, four triangular and one square.
A pentagon has five sides.