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正角、負角|Positive angles & Negative angles
Author:
Ricky LI
,
羅驥韡 (Pegasus Roe)
GeoGebra
New Resources
柱體建築師
兩組對邊相等和有直角的四邊形
画直线等分三角形的面积
球體建築師
球体的体积推导（优化版）
Discover Resources
數值滑桿
三角形柱體 例題-1
平行四邊形面積
圖一
平行四邊形堆垛
Discover Topics
Functions
Cube
Hypothesis Testing
Vectors 3D (Three-Dimensional)
Perimeter