Arc lm on circle o has a measure of 40°. which statements are true? check all that apply. the central angle measure created by the shaded region is 40°. the central angle measure created by the shaded region is 20°. the ratio of the measure of ∠lom to the measure of the whole circle is . circle o can be divided into a total of 9 sectors equal in area to sector lom. circle o can be divided into a total of 10 sectors equal in area to sector lom.