题型:填空题
难度:0.65
引用次数:283
题号:9992679
如图,在 Rt△ABC 中,∠ACB=90°,D、E、F 分别是 AB、BC、CA 的中点,若 CD=4cm,则 EF=______ cm.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/16/3e0ac4d3-015c-4771-8a93-ec818b9ad30d.png?resizew=156)
更新时间:2020-04-08 12:41:04
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