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Q: What shapes make up an octagon?

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making an octagon using diamond shapes

Five shapes that can be constructed are octagon, hexagon, square, triangle, and rectangle.

Eight triangles of equal size form a regular octagon.

There are hundreds of shapes; some shapes are square, triangle, circle, rectangle, oval, octagon, hexagon, pentagon, cube, cylinder, and lots of combinations of shapes that form new shapes.

No, octagons just have to be closed shapes with eight sides - the sides do not have to be of equal length.

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making an octagon using diamond shapes

An octagon

an polygon

n * (n-3)/2

They are both shapes and an octagon can be made up of six or more triangles. Other than that they are not similar. A triangle must have three sides. An octagon must have eight sides.

octagon

It is an octagon I think!

Yes.

a stop sign

An octagon has eight sides.

Eight, possibly.

Triangle Quadrilateral Pentagon Hexagon Heptagon Octagon Nonagon

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