31. simon leaves the stadium and walks 3 blocks east, then 3 blocks
south, then 2 blocks west, and finally 4 blocks north. give the
coordinates of the place where he stops.
32. aida wants to meet simon at his ending location from exercise 31.
she is at city hall. what is the shortest route she can take if she walks
along city streets? is there more than one possible shortest route?
33. in general, how can you use coordinates to find the shortest walking
route from city hall to any point in euclid?