英语词汇“圆幂定理”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	圆幂定理
释义	圆幂定理 yuán mì dìng lǐ过平面上一个定点m，任作一直线与半径为r的定圆交于a、b两点，则ma·mb为定值k，且等于om2-r2。定值k称为点m对圆o的幂，简称“圆幂”。上述命题称为圆幂定理。圆幂定理包括相交弦定理、割线定理和切割线定理。
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