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Sophie [7]
3 years ago
6

1

Mathematics
1 answer:
Yakvenalex [24]3 years ago
5 0

Answer:

(2, - 1 )

Step-by-step explanation:

Under a counterclockwise rotation about the origin of 90°

a point (x, y ) → (- y, x ) , thus

O(- 1, - 2 ) → (2, - 1 )

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