解答题-证明题 较易0.85 引用8 组卷212
如图1,已知:AB∥CD,点E,CD上,且OE⊥OF.
(1)求证:∠1+∠2=90°;
(2)如图2,分别在OE,CD上取点G,H,使FO平分∠CFG,EO平分∠AEH,求证:FG∥EH.
![](https://img.xkw.com/dksih/QBM/2021/5/15/2721383006568448/2786938401292288/STEM/d85c17c2-8217-4fc1-94b6-4a198f525312.png?resizew=388)
(1)求证:∠1+∠2=90°;
(2)如图2,分别在OE,CD上取点G,H,使FO平分∠CFG,EO平分∠AEH,求证:FG∥EH.
![](https://img.xkw.com/dksih/QBM/2021/5/15/2721383006568448/2786938401292288/STEM/d85c17c2-8217-4fc1-94b6-4a198f525312.png?resizew=388)
16-17七年级下·湖北襄阳·期中
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