In three dimensions, it is called an octahedron.
The flat shape with eight sides is an octagon.
You can look it up in Wikipedia.org
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There are 8 sides in the polygon with 8 sides (an octagon).
An Octagon has 8 sides. The other more popular shapes are Hexagon which has 6 sides, a Pentagon which has 5 sides, a Square which has 4 sides and a Triangle which has 3 sides.
An octagon has 8 sides and 8 corners.
No, a Hexagon has only 6 sides. The polygon with 8 sides is called an Octagon.
It has 8 sides.