point A is (-7,5) what is A after its rotated 270 degrees clockwise?

Answer 1

A is (-7,5)

rotate clockwise 270 degrees is the same as counterclockwise 90 degrees

A becomes (-5,-7)

(-7,5) in polar coodrinates is (sqr74, tan^-1(-5/7)) = about (sqr74, 144.46)

rotate 90 counterclockwise and A becomes (sqr74, 234.46) 144.46+90 = 234.46

which is (-5,-7)

just switch x and y, and change the sign of x

to get the point into the 3rd quadrant

Answer 2

Because 360° either direction is where you started, you have a 90° rotation counterclockwise.

(x,y) becomes (-y,x), so (-7,5) becomes (-5,-7).

Continue with the other 3 and you should be able to draw a circle through your 4 points.