直角梯形
中,
,已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b521c99e1f87bfb16c2060393482d71.png)
_________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e977de612b2011edd20594420ec33cb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/594aae32742f0606ac49b7973cec4545.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b521c99e1f87bfb16c2060393482d71.png)
更新时间:2020-11-12 21:45:26
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【推荐1】如图,四边形ABCD中,AB∥CD,∠B=60°,当∠D=______ °时,AD∥BC.
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【推荐2】如图,∠1=∠2,∠DAB=∠BCD.给出下列结论:①AB//CD;②AD//BC:③∠B=∠D;④∠DCA=∠DAC,其中,正确的结论有_____ .(写出正确答案的序号)
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【推荐2】已知在
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