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Mathematics 9 Online
ihavewrizz:

help me with geometry

ihavewrizz:

What is the ordered pair of M′ after point M (5, 6) is rotated 90° counterclockwise?

supie:

a rotation 90° conterclockwise is (x,y) -> (-y,x)

ihavewrizz:

I'm still kinda confused

@supie wrote:
a rotation 90° conterclockwise is (x,y) -> (-y,x)

supie:

it means you have to switch the x and y

supie:

and make the y value negative

supie:

so you apply (-y,x) to M(5,6) to get M'

ihavewrizz:

so the answer would be M' (-6,5)?

supie:

yes

ihavewrizz:

ty

supie:

np

Xemal:

I think this should be helpful

ihavewrizz:

@xemal wrote:
I think this should be helpful
thank you sm bro

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