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三角形转化平行四边形
Author:
吕玉雷
GeoGebra
New Resources
第三周作业效果演示
第八周作业2
活动三：应用性质
龙形曲线-分形龙
撒针估算面积实验
Discover Resources
高美濕地風車
集合運算
分段移動
pythLK
百變糖果棒
Discover Topics
Complex Numbers
Power Functions
Geometry
Subtraction
Plane Figures or Shapes