AEO 共圓,BHOF 共圓,兩圓相等,直徑都是大圓的半徑。
角AOE =角HBF。
兩角所對的割線AE 和 HF 相等。
AEO 共圓,BHOF 共圓,兩圓相等,直徑都是大圓的半徑。
角AOE =角HBF。
兩角所對的割線AE 和 HF 相等。
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