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Author:
海平 文
GeoGebra
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正方形雪花图案
第八周作业
第八周作业3
折扣
科赫雪花
Discover Resources
Quiz on Reflection 反射變換:測驗
任何三角形內角和180度(五上數翰4-2)
P53_3c
other
折纸成抛物线
Discover Topics
Solids or 3D Shapes
Cone
Hyperbola
Ellipse
Linear Programming or Linear Optimization