The conic sections are formed by taking
flat slices of a solid double right cone.
You can generate them with a lamp and shade!
Take any lamp with a cylindrical shade and observe
the light cone's projection on the wall!
Put it next to the wall (hyperbola).
Tilt more (ellipse).
Align horizontal (circle).
Make shadow puppets just to be funny.
The Math Behind the Fact:
See Eccentricity of Conics.
How to Cite this Page:
Su, Francis E., et al. "Conic sections."
Math Fun Facts.