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Angle Between a Line and a Plane Definition 線與平面的交角 定義
Author:
Steven S. H. Chu
GeoGebra
New Resources
球体的体积推导（优化版）
第八周作业
錐體建築師
找出對稱軸
三位數除以一位數（二）
Discover Resources
畢氏樹
根據百分率找數量（二）: 例2
...
軌跡觀察
摺長方形2
Discover Topics
Bar Chart or Bar Graph
Pie Chart or Circle Chart
Fractions
Standard Deviation
Expected Value