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22题宋祥问
Author:
万超杰
GeoGebra
New Resources
中华人民共和国国旗
双心四边形
比較五件物件的重量
平行線的判定
斐波那契螺旋弧线（表格法）
Discover Resources
Angle of Elevation & Angle of Depression 仰角和俯角
平移函數的切線(二次)
reflectional symmetry_4
moon
Menger Sponge
Discover Topics
Geometric Distribution
Cosine
Linear Functions
Constructions
Statistics