SOLUTION: if i have angles in the circle... how do i figure them out if i kno the arcs?

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 Geometry: Circles and their properties Solvers Lessons Answers archive Quiz In Depth

 Question 404376: if i have angles in the circle... how do i figure them out if i kno the arcs? Answer by scott8148(6628)   (Show Source): You can put this solution on YOUR website!central angles (vertex at the center of the circle) are equal to their encompassed arc vertical angles (lines intersecting in a circle) are equal to the average of the encompassed arcs a special case of the vertical angle is when the vertex is on the circumference of the circle ___ in this case ; one of the encompassed arcs is zero ___ the measure of the angle is still the average of the arcs ; but the average is half of the remaining arc