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拼貼3
Author:
李伶芳
GeoGebra
New Resources
兩位數加法
球体的体积推导（优化版）
拼砌四邊形
球體建築師
判斷球體
Discover Resources
正方形的旋轉
向量的分解（非垂直）
勝者即正義
pyramid01 by Mr LO WY
折扣 例1的副本
Discover Topics
Pythagoras or Pythagorean Theorem
Logarithm
Ellipse
Probability
Quadrilaterals