(2000•吉林)某型号飞机的机翼形状如图所示,AB∥CD,根据图中数据计算AC、BD和CD的长度(精确到0.1米,
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232735970022911/SYS201310212327359700229002_ST/0.png)
≈1.414,
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232735970022911/SYS201310212327359700229002_ST/1.png)
≈1.732)
考点分析:
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![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232730893925803/SYS201310212327308939258027_ST/0.png)
GF
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