AOC230的知识精选

如图,已知四边形ABCD内接于⊙O,∠B+∠AOC=230°,则∠B的度数为(   )A.130°      ...
问题详情:如图,已知四边形ABCD内接于⊙O,∠B+∠AOC=230°,则∠B的度数为(   )A.130°                           B.115°                           C.100°   ...
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