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The image of the point (1, -2) after a rotation of 180° about the origin is (-2, 1) (2, -1) (-1, 2)
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@nikato
(-2,1)
@CrashOnce
no.
here is the rule for 180 degree rotation \[(x,~y) \longrightarrow (-x,~-y)\]
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oh so its (-1, 2)?
Yes!
thnx
yw:) that should make sense because you're essentially reflecting the given point about the origin. so the signs of coordinates will flip
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