Q. Find the measure of the arc or central angle indicated. Assume that lines which appear to be diameters are actual diameters. mRS
Identify Diameter of Circle: Identify that RS is a diameter of the circle.Since RS is a diameter, it splits the circle into two equal halves.
Circle Division by Diameter: Recognize the properties of a circle divided by a diameter.A diameter divides a circle into two semicircles, each representing an angle of 180 degrees at the center.
Calculate Arc Measure: Calculate the measure of the arc or central angle mRS. Since RS is a diameter, the arc or central angle mRS spans a semicircle. Therefore, the measure of mRS is 180 degrees.
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