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球
Author:
Chan Pui Chuen
GeoGebra
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比較五件物件的重量
龙形曲线-分形龙
百分數及其應用
折扣
椭圆内切圆链
Discover Resources
扇形滾動基測試題
分段2
Hypocycloid Wheel
maths
Comparing_fraction
Discover Topics
Rectangle
Symmetry
Limits
Addition
Sine