ab是圆o的直径,弦cd⊥ab,垂足是h,p是cd延长线一点,pc切圆o于e,be交cd于f,求证pf²=pc*pd

ab是圆o的直径,弦cd⊥ab,垂足是h,p是cd延长线一点,pc切圆o于e,be交cd于f,求证pf²=pc*pd
ab是圆o的直径,弦cd⊥ab,垂足是h,p是cd延长线一点,pc切圆o于e,be交cd于f,求证pf²=pc*pd

ab是圆o的直径,弦cd⊥ab,垂足是h,p是cd延长线一点,pc切圆o于e,be交cd于f,求证pf²=pc*pd
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