We square the city before making the Migrash.

1.   ?    True.
2.   ?    False, but we do for Eruv.
3.   ?    False for both.
4.   ?    Safek.
5.   ?    Teiku.

If the side of a square is one, the diagonal is one and _______.

1.   ?    a third
2.   ?    2/5
3.   ?    1/2
4.   ?    1/4
5.   ?    1/5

When do we give a city a Karfaf?

1.   ?    Every city.
2.   ?    Two adjoining cities get one.
3.   ?    Two adjoining cities get 2.
4.   ?    After a hurricane
5.   ?    Machlokes A&B&C.

If there are three villages in a line how far can there be from the outermost ones to the middle in order for them to combine?

1.   ?    They never combine.
2.   ?    2000 Amos.
3.   ?    1000 Amos.
4.   ?    Karpaf
5.   ?    2 Karpafs.

If the three are in a triangle A B How far can C be from A or B?

C

1.   ?    They never combine.
2.   ?    2000 Amos.
3.   ?    1000 Amos.
4.   ?    Karpaf
5.   ?    2 Karpafs.

In Question 5 how far apart can A and C be from each other?

1.   ?    70 Amos.
2.   ?    141 Amos.
3.   ?    1000 Amos.
4.   ?    2000 Amos.
5.   ?    No limit so long as B would be large enough to combine them.