Your correspondent 'wiki user' is incorrect.
A Hexagon is a 2-dimensional shape.
A HEXHEDRON is a 3-dimensional solid.
'Object' Do you mean 'shape' or 'solid'. a 2-dimensional shape is an hexagon a 3-dimensional solid is a hexahedron.
Cube.
Hexagon
A hexagon
It's a 6 sided shape.
A hexagon is a 6-sided plane shape (polygon). A hexahedron is a 6 -sided solid shape.
A hexagon.
Rectangular prism
tetrakaidecahedron
An object with 6 corners is called a hexagon.
Octahedron.
No rectangle can have 6 sides. Rectangles by definition have 4 sides. ------------ A 6-sided rectangular solid, on the other hand, has... let's see, could it be six?