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直线与圆相切
Author:
蔡永志
直线与圆相切
GeoGebra
New Resources
找出對稱軸
球體建築師
算柱 (兩位數)
兩位數加法
三位數除以一位數（二）
Discover Resources
百分數（小學）：折扣 / 賺賠（Java 版）
三節棍
平面直角坐标系
(005)80201辛宇婕
GGB11
Discover Topics
Special Points
Centroid or Barycenter
Intersection
Rational Numbers
Median Line