Which of the following points represents a 90?counter-clockwise rotation of a line with end-points: (1, 2) and (–8, 9)?
?
A. ?(–2, 1) and (–9, –8)
B. (–2, –1) and (–9, 8)
C. ??(1, –1) and (–8, 8)
D. ??(1, –1) and (–9, 9)
E. None of the above.
Answer: A
Mathematics
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