Geometryhard · Past Paper
The line segment joining (2, 3) and (-1, 5) is rotated 90 degrees clockwise about origin. New points are:
A(3, -2) and (5, 1)
B(-3, 2) and (-5, -1)
C(2, 3) and (1, -5)
D(3, 2) and (5, -1)
✓ Correct Answer: A — (3, -2) and (5, 1)
Rotation (x, y) by 90 deg clockwise is (y, -x). (2, 3) becomes (3, -2). (-1, 5) becomes (5, 1).
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