两圆交于a，b，过ab延长线上点p作两圆的4条切线，如何证明不是弦的切点连线交点分别为内外位似中心？ 知乎 Sketch Coloring Page

两圆交于a，b，过ab延长线上点p作两圆的4条切线，如何证明不是弦的切点连线交点分别为内外位似中心？ 知乎 Template

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tomski两圆交于a，b，过ab延长线上点p作两圆的4条切线，如何证明不是弦的切点连线交点分别为内外位似中心？ 知乎 coloring

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若相交两圆的公共弦长是12，圆心距是10，其中一圆的半径长为10，则另一圆的半径长为 百度教育 sketch template

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3．如图⊙O1和⊙O2相切于点PAB切两圆于ABΔPAB的�长为40面积为60求P点到AB的距离——青夏教育精英家教�—— sketch template

如图已知⊙和⊙相交于两点过点作⊙的切线交⊙于点过点作两圆的割线分别交⊙⊙于与相交于点1求证2求证3当⊙与⊙ sketch template

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四边形ABCD内接于圆其边AB与DC的延长线交于点PAD与BC的延长线交于点Q．由Q作该圆的两条切线QE和QF切点分别为EF．求证P sketch template

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已知如图 ABC中AB=AC以AB为直径的⊙O交BC于点D过点D作DF⊥AC于点F交BA的延长线于点E．求证1BD=CD sketch template

15．过点44与抛物线焦点的直线交抛物线于AB两点则AB= ——青夏教育精英家教�—— sketch template

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