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Quadrilateral ABCD is inscribed in the circle shown. What is the value of x+y?
(Note: The measure of an angle inscribed in a circle is equal to half of the measure of the central angle that subtends the same arc.)
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· 相关考点
4.5.6 圆心角与圆周角
4.5.6 圆心角与圆周角
以上解析由 考满分老师提供。