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鈍角和銳角
Author:
Tam Ho Yin
GeoGebra
New Resources
科赫雪花
平行線的判定
折扣
撒针估算面积实验
正方形雪花图案
Discover Resources
Travel Graph (Two Bodies) 行程圖 (雙物體)
整數或分數÷分數_ 工作紙（一）_題2b
quadrilaterals 5
地科模型–日照長短
angle between 2 planes 02
Discover Topics
Similar Triangles
Geometric Transformations
Reflection
LCM and GCD
Quadratic Functions