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OpenStudy (anonymous):
Given the polygon containing Point P. Point P is rotated 90° about the origin. Its image is Point P is (2,5) So how do i rotate it by 90?
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OpenStudy (anonymous):
@ganeshie8 any idea?
ganeshie8 (ganeshie8):
by 90 degrees they mean 90 degrees counter clockwise
ganeshie8 (ganeshie8):
you may memorize this rule for 90 degrees counterclockwise rotation : \[(x,~y) \longrightarrow (-y,~ x)\]
ganeshie8 (ganeshie8):
\[(2,~5) \longrightarrow (?,~ ?)\]
OpenStudy (anonymous):
Ahhh dang you're right! So then it would (-5,2) thanks again!
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ganeshie8 (ganeshie8):
looks good!
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