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众所周知,“若圆周角是直角,则它所对弦必是圆的直径.”这一个结论用解析几何的语言可“翻译”成:设P是圆x2+y2=R2上一点,PA、PB是
As we all know, “If the circumferential angle is a right angle, then it will be the diameter of a circle to the string. ” This conclusion can be “translated ” in the language of analytical geometry: Let P be a circle x2 + y2 = PA, PB Yes