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Urgent matrices help!!!

Work out the matrix that transforms the unit square by a 270 degrees rotation about O.
Which way do I rotate it? Clockwise or anti clockwise? I don't need the question answered, I can do that myself I just don't know what way to rotate it
The convention is usually anti-clockwise but I still think the question is ambiguous.
Original post by Math12345
The convention is usually anti-clockwise but I still think the question is ambiguous.


But why is it anti clockwise?
Original post by Purpleunicorn197
But why is it anti clockwise?


Positive rotation is anti clockwise.

"http://www.mathwarehouse.com/transformations/rotations-in-math.php"
Original post by Math12345
Positive rotation is anti clockwise.

"http://www.mathwarehouse.com/transformations/rotations-in-math.php"

Thank you so much

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