The truncated cube is formed in the same manner as the cuboctahedron, but the truncation is only carried far enough to leave the original faces octagons.
The standard of course is the long rectangular aquarium, but aquariums now also come in such shapes as octagons, cylinders and cubes.
This type of jewelry box comes in various shapes, including octagons, circles, squares, and rectangles.
Then move to pentagons (5 sides), hexagons (6 sides), and octagons (8 sides), etc. if it appears that children have mastered the first set of shapes.
The word usage examples above have been gathered from various sources to reflect current and historial usage. They do not represent the opinions of YourDictionary.com.