证明：GH=HK
当三角形CGH是等腰三角形时，求m的值（D点是这条抛物线上的一个动点，横坐标为m，且-3＜m＜-1，DK⊥x）
- Resource Type
-
Activity
- Tags
-
- Target Group (Age)
- 3 – 19+
- Language
- Chinese Simplified / 简体中文
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