1,如图(见附件),在等腰梯形ABCD中AD‖BC,BC=4AD,AD=4√2,∠B=45°.直角三角板含45°角的顶点E在边BC上移动,一直角边始终经过点A,斜边与CD交于点F.若△ABE为等腰三角形,则CF的长等于( )2,如图(见
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![1,如图(见附件),在等腰梯形ABCD中AD‖BC,BC=4AD,AD=4√2,∠B=45°.直角三角板含45°角的顶点E在边BC上移动,一直角边始终经过点A,斜边与CD交于点F.若△ABE为等腰三角形,则CF的长等于( )2,如图(见](/uploads/image/z/951337-1-7.jpg?t=1%2C%E5%A6%82%E5%9B%BE%EF%BC%88%E8%A7%81%E9%99%84%E4%BB%B6%EF%BC%89%2C%E5%9C%A8%E7%AD%89%E8%85%B0%E6%A2%AF%E5%BD%A2ABCD%E4%B8%ADAD%E2%80%96BC%2CBC%3D4AD%2CAD%3D4%E2%88%9A2%2C%E2%88%A0B%3D45%C2%B0.%E7%9B%B4%E8%A7%92%E4%B8%89%E8%A7%92%E6%9D%BF%E5%90%AB45%C2%B0%E8%A7%92%E7%9A%84%E9%A1%B6%E7%82%B9E%E5%9C%A8%E8%BE%B9BC%E4%B8%8A%E7%A7%BB%E5%8A%A8%2C%E4%B8%80%E7%9B%B4%E8%A7%92%E8%BE%B9%E5%A7%8B%E7%BB%88%E7%BB%8F%E8%BF%87%E7%82%B9A%2C%E6%96%9C%E8%BE%B9%E4%B8%8ECD%E4%BA%A4%E4%BA%8E%E7%82%B9F.%E8%8B%A5%E2%96%B3ABE%E4%B8%BA%E7%AD%89%E8%85%B0%E4%B8%89%E8%A7%92%E5%BD%A2%2C%E5%88%99CF%E7%9A%84%E9%95%BF%E7%AD%89%E4%BA%8E%EF%BC%88+%EF%BC%892%2C%E5%A6%82%E5%9B%BE%EF%BC%88%E8%A7%81)
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