6 .
If you join up the points A (0, 0), B (1, 0), C (1, -1), D (0, -1) with straight lines you will get a square that lies in a certain quadrant. If the square is rotated anticlockwise through 90° about the origin (0, 0), which quadrant will it end up in and what will its new coordinates be?
A (0, 0), B (1, 0), C (1, -1), D (0, 1) in the first quadrant
A (0, 0), B (0, 1), C (1, 1), D (1, 0) in the first quadrant
A (0, 0), B (0, -1), C (-1, -1), D (-1, 0) in the third quadrant
A (0, 0), B (1, 0), C (0, -1), D (-1, -1) in the third quadrant