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what is the name of this 3d solid please?

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"faces" of 3 and 4 sides.

Thanks!

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2 Answers 2

up vote 4 down vote accepted

It's a cuboctahedron.

$${ }$$

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It's called cuboctahedron.

Refer http://en.wikipedia.org/wiki/Quasiregular_polyhedron .

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