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Q: What Three-Dimensional Figure Has One Vertex?

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triangular prism

It is (-1, 3).

2

a square* * * * *A square does not have only 1 vertex: it has 4.The correct answer is an infinite cone.

The sum of the angles around a vertex point in a plane will always be 360o. Picture a bicycle wheel with all its spokes radiating out from the hub. Now pick two spokes to form a vertex. Find the angle of your vertex, and then subtract it from 360o. As there are 360o in a circle, and your figure (the vertex) is a slice of the circle, its angle plus all the rest of the arc about the vertex will sum to 360o. If you've discovered the angle of your vertex, you cannot help but find the sum of the rest of the angles (if there are more than one) around your vertex.

Related questions

a cone

Cone

This figure is a CONE.

CONE

A cone has one circular base and a vertex that is not on the base.as described on math.com

A cone

triangular prism

cone

Cone

Yes, the point on the cone is a vertex.Typical math textbooks define a cone as "A solid figure with one circular face and one vertex." So yes, there is one vertex.

A conic section.

a cone

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