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GeoGebra
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GeoGebra
GeoGebra Classroom
GeoGebra
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IR-2
Author:
知己
GeoGebra
New Resources
比較五件物件的重量
双心四边形
第三周作业效果演示
折扣
平行線的判定
Discover Resources
Shoplifting and theft histogram
七巧板
伽利略比值II (Alfinio Flores & Hugh A. Sanders)
热带风暴storm
勒洛四面体（拼接法）
Discover Topics
Geometric Transformations
Means
Vectors 2D (Two-Dimensional)
Sine
General Quadrilateral