The center of a circle is O. If m<ABO=20, what is arcACB?
You need to provide or describe a figure to go with that question
To find the measure of arc ACB, we need to know more about the figure. Specifically, we need to determine the relationship between angles ABO and ACB.
In a circle, the measure of an arc is equal to the measure of its corresponding central angle. Therefore, if we know the measure of angle ABO and its relationship with angle ACB, we can find the measure of arc ACB.
Please provide further information or a diagram that can help determine the relationship between angles ABO and ACB, such as whether they are congruent, supplementary, or if any other information is given about the circle.