解答题-问答题 适中0.65 引用2 组卷1172
(1)如图,AB∥CD,AE交CD于点C,DE⊥AE,垂足为E,∠A=30°,求∠D的度数.
![](https://img.xkw.com/dksih/QBM/2018/6/28/1977157948932096/1979378100903936/STEM/a38ddb3d7df04000a7ddc2d4c880e131.png?resizew=150)
(2)如图,E,C在BF上,AB=DE,AC=DF,BE=CF,试说明:AC∥DF.
![](https://img.xkw.com/dksih/QBM/2018/6/28/1977157948932096/1979378100903936/STEM/06f29bb8655c4e538a21dd4108ba4ddc.png?resizew=134)
![](https://img.xkw.com/dksih/QBM/2018/6/28/1977157948932096/1979378100903936/STEM/a38ddb3d7df04000a7ddc2d4c880e131.png?resizew=150)
(2)如图,E,C在BF上,AB=DE,AC=DF,BE=CF,试说明:AC∥DF.
![](https://img.xkw.com/dksih/QBM/2018/6/28/1977157948932096/1979378100903936/STEM/06f29bb8655c4e538a21dd4108ba4ddc.png?resizew=134)
18-19七年级下·山东济南·期末
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