Katherine is required to wear uniforms to school. Katherine has a green shirt, a white shirt, a gray shirt, and a blue shirt. Sh
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To understand this picture 2 cones that are stacked one on top of another. A double-napped cone is created when a generator is rotated about a fixed vertical axis. A line is created when the cone is cut by a plane containing the generator. Please see the attachment to help you understand this.
I hope this helps, Regards.
