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A cone with included interior is 3-dimensional. However, if you are not including the interior it is a 2-dimensional surface residing in a 3-d ambient space.

If you're utilizing the common topological definition of dimension, you can derive that a cone (surface only) is 2 dimensional by looking at its open sets.

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Raiziak Raiz

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3y ago

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A cone is a three dimensional figure. The cross-section of a cone is a two dimensional shape.

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Wiki User

13y ago
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Q: Is a cone two dimensional or three dimensional?
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