5.

A (0;0)
B (5;0)
C (12; -3)
D (7; -3)
6.
| A | (2; -3) | (-10; -11) | (0; 1) | (0; 0) | (c; d) | (3; 5) | (3t + 5,7) | (1; 3) |
| B | (-3, 1) | (4; 7) | (6; -11) | (-3; 7) | (3; 8) | (t + 7, -7) | ||
| M | (-8; 5) | (-3; -2) | (3; 5) | (-6; 13) | (a; b) | (0, 0) |
5.

A (0;0)
B (5;0)
C (12; -3)
D (7; -3)
6.
| A | (2; -3) | (-10; -11) | (0; 1) | (0; 0) | (c; d) | (3; 5) | (3t + 5,7) | (1; 3) |
| B | (-3, 1) | (4; 7) | (6; -11) | (-3; 7) | (3; 8) | (t + 7, -7) | ||
| M | (-8; 5) | (-3; -2) | (3; 5) | (-6; 13) | (a; b) | (0, 0) |