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The figure shows a circle with center $$O$$ . If the measure of angle $ORP$ is 21.5 degrees, what is the measure of angle $PQR$ ?
([u]Note[u/]: The measure of an angle inscribed in a circle is equal to half 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。