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Angle between 2 planes
Author:
johnmayhk
GeoGebra
Right click and drag the 3-dimensional object to view it in different angles.
New Resources
判斷球體
四邊形的特性
兩位數除以一位數（一）
錐體建築師
異分母分數減法
Discover Resources
Quiz on Angles associated with Parallel Lines 平行線上的角：測驗
觀察軌跡求面積
正n邊形與圓上點的中點軌跡(解析)
探索“三等分点连线围成的小三角形”的特点
同旁內角---水平平行綫
Discover Topics
Vectors 3D (Three-Dimensional)
Intersection
Histogram
Vectors 2D (Two-Dimensional)
Centroid or Barycenter