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平行四邊形面積
Author:
maths_p5
GeoGebra
New Resources
活动三：应用性质
第八周作业
第三周作业效果演示
正方形雪花图案
龙形曲线-分形龙
Discover Resources
testing2
(003)80102史巧薇
angle in semi-circle
圆的平移（平移加滑桿）
GeoGebra成像规律的演示
Discover Topics
Stochastic Process or Random Process
Upper and Lower Sum or Riemann Sum
Geometry
Geometric Distribution
Trigonometry