Which of the following statements is/are true regarding the measure of an angle? I- Associated with an angle is its measure, generated by a rotation about the vertex. II- The measure of the angle is determined by rotating a ray starting at one side of the angle, called the terminal side, to the position of the other side, called the initial side. II-A counter-clockwise rotation of the initial side generates a negative measure. IV - A clockwise rotation of the initial side generates a positive measure. a. I only b. I and II c. I, II, and II d. I, II, III, and IV

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