Angle MNO is formed by segments MN and NO on the following coordinate grid: Angle MNO is rotated 90 degrees counterclockwise about the origin to form angle M'N'O'. Which statement shows the measure of angle M'N'O'?

Angle MNO is formed by segments MN and NO on the following coordinate grid Angle MNO is rotated 90 degrees counterclockwise about the origin to form angle MNO W class=