standard_description: (+)Derive the equations of ellipses and hyperbolas given the foci, using the fact that the sum or difference of distances from the foci is constant.
problem_activity: Task
You have been asked to place a warehouse so that it is an equal distance from the three roads indicated on the following map. Find this location and show your work.
[IMG]
Show how to fold your paper to physically construct this point as an intersection of two creases.
Explain why the above construction works, and in particular why you only needed to make two creases.


aligns: no