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 Description  
 Cone:  A three dimensional figure with a circular or elliptical base and one vertex.
This is an example of a cone. The base can be a circle or an ellipse.


This is a special type of a cone. The base is a circle, and the line segment from the vertex to the center of the base intersects the plane of the circle at a right angle. This type of cone looks like an ice cream cone and is called a right circular cone.