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二面角的夹角
Author:
chen-sir
Topic:
Solids or 3D Shapes
GeoGebra
New Resources
画直线等分三角形的面积
兩位數除以一位數（一）
【案例】圆柱体内放置一个大球六个小球
第八周作业
球體建築師
Discover Resources
soccer
滾出曲線滾出曲線
Square Root 平方根
雙曲線的平移
连续开方（制作：谢建华，修订：孟宝兴）
Discover Topics
Step Functions
Geometric Transformations
Means
Tangent Function
Right Triangles