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OpenStudy (anonymous):
If polygon ABCD rotates 90° counterclockwise about the origin to create polygon A′B′C′D′, what are the coordinates of point B′ ?
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OpenStudy (dmndlife24):
Depends of where the coordinates of polygon ABCD are in the first place...
OpenStudy (anonymous):
Oh sorry, I forgot lol
OpenStudy (anonymous):
OpenStudy (dmndlife24):
It's actually very simple you just you the rule (x, y) -- (-y, x)
OpenStudy (dmndlife24):
And plug in the x and y coordinates
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OpenStudy (dmndlife24):
Lets' start with A... A is (1, 1) so... A' is (-1, 1)
OpenStudy (dmndlife24):
I actually have to leave but I promise I will help you with the problem when I get back
OpenStudy (anonymous):
don't worry about it... I'm just gonna take a guess lol..
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