Final answer:
The angle of rotation can be calculated in degrees for counterclockwise rotation.
Step-by-step explanation:
The angle of rotation represents the amount of rotation made by an object around a fixed point. In this case, the angle of rotation is given in degrees. To calculate the angle of rotation, we need to consider the number of degrees rotated in a counterclockwise direction.
a) 90° counterclockwise: This means that the object has rotated 90 degrees in a counterclockwise direction.
b) 180° counterclockwise: This means that the object has completed a half turn, rotating 180 degrees in a counterclockwise direction.
c) 270° counterclockwise: This means that the object has rotated 270 degrees in a counterclockwise direction, which is equivalent to three-quarters of a turn.
d) 360° counterclockwise: This means that the object has completed a full turn, rotating 360 degrees in a counterclockwise direction.