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定长线段在相交直线上滑动
Author:
冯伟冀
GeoGebra
New Resources
第八周作业
異分母分數減法
直角坐標平面上的旋轉變換
算柱 (兩位數)
四邉形 (四年級) 教師版
Discover Resources
範例：畫圈圈的筆
圓周 (圖形A)
Rotation in the Coordinate Plane
加法001(结果10以内)
DANDELIN
Discover Topics
Secant Line or Secant
Intersection
Statistical Characteristics
Reflection
Coordinates