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dragon(龙)
Author:
赵林
GeoGebra
New Resources
第八周作业
球體建築師
球体的体积推导（优化版）
GeoGebra笔记功能体验课件
兩組對邊相等和有直角的四邊形
Discover Resources
special
圓錐體內切球
求三棱锥体积
折线匀速动点工具
圓心在同一直線上且相切的圓(半徑可改變)
Discover Topics
Real Numbers
Difference and Slope
Vectors 2D (Two-Dimensional)
General Quadrilateral
Circle