如图1,在正方形ABCD中,E是AB上一点,F是AD延长线上一点,且DF=BE.
![](https://img.xkw.com/dksih/QBM/2016/9/23/1574241392492544/1574241398964224/STEM/19cfc7c010474cfcbd0fd24468aed411.png)
(1)①试说明CE=CF,∠BCE=∠DCF;
②如图1,若点G在AD上,且∠GCE=45°,则GE=GF成立吗?为什么?
(2)运用(1)中积累的经验和知识,完成下题:
如图2,在梯形ABCG中,AG∥BC,BC>AG,∠B=90°,AB=BC=6,E是AB上 一点,且∠GCE=45°,BE=2,求GE的长.
![](https://img.xkw.com/dksih/QBM/2016/9/23/1574241392492544/1574241398964224/STEM/19cfc7c010474cfcbd0fd24468aed411.png)
(1)①试说明CE=CF,∠BCE=∠DCF;
②如图1,若点G在AD上,且∠GCE=45°,则GE=GF成立吗?为什么?
(2)运用(1)中积累的经验和知识,完成下题:
如图2,在梯形ABCG中,AG∥BC,BC>AG,∠B=90°,AB=BC=6,E是AB上 一点,且∠GCE=45°,BE=2,求GE的长.
更新时间:2016-12-06 13:45:14
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【推荐1】阅读下面材料:
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【推荐2】在Rt△POQ中,OP=OQ=4,M是PQ中点,把一三角尺的直角顶点放在点M处,以M为旋转中心,旋转三角尺,三角尺的两直角边与△POQ的两直角边分别交于点A、B.求证:MA=MB;
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