http://www2.best.com/~xah/SpecialPlaneCurves_dir/Hyperbola_dir/hyperbola.html
1. Go to the above sights and examine the reason(s) why the relationship
between a^2, b^2, and c^2 is different from their relationship in an ellipse.
2. Define the hyperbola in terms of distance.
3. What are asymptotes, and how do they relate to the hyperbola?
4. What type of hyperbola has the axes of the coordinate plane
as its asymptotes?
