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Author:
肖昆明
GeoGebra
New Resources
双心四边形
第八周作业
第八周作业3
百分數及其應用
异形操场
Discover Resources
拋物線
正四面體與正八面體
均分除法（整數÷整數）
畢氏
圆锥曲线1
Discover Topics
Line Segment
Cosine
Exponential Functions
Vectors 3D (Three-Dimensional)
Tangent Function