| A | B |
| ( 2, 5) , ( 2, -3) | undefined |
| ( 5, 1) , ( 9, 2 ) | 1/4 |
| ( -2, 0), ( -2, 5) | undefined |
| ( 3, 4), ( 5,6) | 1 |
| ( -3, 5 ), ( 2, 5) | 0 |
| ( 6, 5 ) , ( 8, 6) | 1/2 |
| ( 0, -2) , ( 3, -5 ) | -1 |
| ( -1, 8), ( -1 3) | undefined |
| ( 5, 1 ) , ( 8, 2 ) | 1/3 |
| ( 4, -2 ) , ( 4, 0) | undefined |
| 2, -1),( 5, -3) | -2/3 |
| (1,0), ( 5, 4) | 1 |
| (-3, -2), ( 3, 4 ) | 1 |
| ( -3, 2) ,( -3, 0) | undefined |
| ( 3,2 ) (1,4) | -1 |
|