如图,把一张长方形纸片ABCD沿EF折叠,若∠EFG=50°,则∠BGE=( )
![](https://img.xkw.com/dksih/QBM/2020/7/17/2507409244905472/2507738349723649/STEM/8eb1334a75c144af8b3d620fab1e119e.png?resizew=176)
![](https://img.xkw.com/dksih/QBM/2020/7/17/2507409244905472/2507738349723649/STEM/8eb1334a75c144af8b3d620fab1e119e.png?resizew=176)
A.100° | B.90° | C.80° | D.70° |
更新时间:2020-08-14 21:01:44
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【推荐2】在庆祝中华人民共和国成立70周年阅兵式上,我国自主研制的“DF—17导弹”首次登场,震撼全球.如图是“DF—17导弹”上的一个零件的平面图,已知AB∥FE∥DC,AF∥ED∥BC,∠B=65°,则
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【推荐2】把一张矩形纸片ABCD按如图方式折叠,使顶点B和点D重合,折痕为EF.若AB=4,BC=8.则△DEF的面积是( )
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