A pentagon. If the sides and angles are equal it is a REGULAR pentagon.
A polygon is an unequal six sided shape. A polygon or hexagon is the name used weather the sides are even or not.
There is no specific name for such a shape.
A congruent triangle is a triangle with all its sides being unequal to each other.
an equal sided triangle
A square is a four-sided shape with all sides equal and all angles equal.
A three sided figure with all unequal sides is called a scalene triangle. ■
A hexagon IS a six sided polygon. A REGULAR hexagon is the shape we tend to think of when we say hexagon because it has equal sides and equal internal angles. However, a hexagon can have unequal sides and internal angles and still be a hexagon. A hexagon is just a shape with six sides.