What must be true to define the measure of a distance of an arc between the points A and B on a circle?
O A unit of measure must be defined for distance.
O The distance along the arc has no relation to the angle measure between the two points
O The radius of the circle must be measured
O The circle must be drawn on a coordinate plane
The radius of the circle needs to be measured for the whole circle meaning that if you subtract the two points from the circle's area you'd get the distance of the arc
