Some of them are: triangle, quadrilateral, pentagon, hexagon, heptagon, octagon, nonagon, decagon ..... etc
An octagon has eight sides.
The most common polygon shapes are as follows:TriangleQuadrilateralPentagonHexagonOctagon
An octagon
Eight, possibly.
a pyramid
An octagon has eight sides.
The most common polygon shapes are as follows:TriangleQuadrilateralPentagonHexagonOctagon
An octagon
a triangle
Eight, possibly.
They are both 3-dimensional shapes.
They're both shapes... and three dimensional shapes.
a pyramid
No, octagons just have to be closed shapes with eight sides - the sides do not have to be of equal length.
They are shapes.
A polyhedron with eight plane surfaces. Source: Answers.com
A triangle has three sides.A quadrilateral has four sides.A pentagon has five sides.A hexagon has six sides.A heptagon has seven sides.An octagon has eight sides.A nonagon has nine sides.A decagon has ten sides.A dodecagon has twelve sides.