Refer to the figure below and mark all statements that are true.. a. if the ratio of the arc length to r is 1, then the measure of is 1 radian.. b. if the measure of is 60, then the arc length is r.. c. if the measure of is 1 radian, then the arc length is r.. d. the ratio of arc length to r is always equal to 1.

From my research, the figure related to this image has a circle with a marked sector. The sector's radius is labeled r, and the angle labeled theta. Among the choices, the correct ones are: A. "If the ratio of the arc length to r is 1, then the measure of is 1 radian" and C. "If the measure of is 1 radian, then the arc length is r"