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轨迹20
Author:
万超杰
GeoGebra
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兩組對邊相等的四邊形
球體建築師
【案例】圆柱体内放置一个大球六个小球
三位數除以一位數（一）
找出對稱軸
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雙曲線語橢圓
希羅公式
圓外冪性質
[洋葱] 与相似有关的动点问题-上(0051)
圆与直线的位置关系
Discover Topics
Rhombus
Incircle or Inscribed Circle
Scalene Triangles
Sphere
Congruence