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tangent is 90
Author:
shp
GeoGebra
New Resources
比較五件物件的重量
活动三:应用性质
第八周作业2
龙形曲线-分形龙2
湖南省中职数学教师省培(GeoGebra培训案例)
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層層出現的圓
三棱柱的表面面積
Angle between a Line and a Plane 投影與線面角
Lissajous curves(利薩如圖形)
旋转的台阶
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Algebra
Means
Reflection
Similar Triangles
Tangent Function