一条弦把圆分成2:3两部分，那么这条弦所对的圆周角的度数为_________

一条弦把圆分成2:3两部分，那么这条弦所对的圆周角的度数为__________.

答案

72°或108°

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一条弦把圆分成2:3两部分，那么这条弦所对的圆周角的度数为_________

答案

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