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【简答题】
求三角形中未知角的度数． 如图1，∠1=______； 如图2，∠1=______；， 如图3，∠1=∠2=______．
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举一反三
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【简答题】A．Because they lack self-discipline in their studies. B．Because they spend too much time on the Internet. C．Because they have not exerted their utmost. D．Because they have developed poor relationships...
【简答题】A．Because they lack self-discipline in their studies. B．Because they spend too much time on the Internet. C．Because they have not exerted their utmost. D．Because they have developed poor relationships...
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