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【简答题】
如图,已知∠ ACD = 70 ° ,∠ ACB = 60 ° ,∠ ABC = 50 ° . 试说明: AB ∥ CD.
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皮皮学刷刷变学霸
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A.
12%
B.
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C.
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D.
20%
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A.
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B.
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C.
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D.
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