AEO 共圆,BHOF 共圆,两圆相等,直径都是大圆的半径。
角AOE =角HBF。
两角所对的割线AE 和 HF 相等。
AEO 共圆,BHOF 共圆,两圆相等,直径都是大圆的半径。
角AOE =角HBF。
两角所对的割线AE 和 HF 相等。
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