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Rotation 180 Degrees About the Origin
Rotation matrix
(-1 | 0 0 | -1)
Transformation
(x, y)⟶(-x, -y)
Matrix form of the transformation
(x y)⟶(-1 | 0 0 | -1) (x y)
Visual representation
(-1 | 0 0 | -1)
(x, y)⟶(-x, -y)
(x y)⟶(-1 | 0 0 | -1) (x y)