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橢圓2--四圓心近似法
Author:
33陳郁婷
GeoGebra
New Resources
第八周作业
兩位數加法
球体的体积推导（优化版）
兩組對邊相等的四邊形
四邊形的特性
Discover Resources
Proof2 周子翔
Opening Box
學習單：平行四邊形面積
小遊戲(Butterfly)
六边形的向外迭代
Discover Topics
Means
Tree Diagrams
Real Numbers
Sequences and Series
Secant Line or Secant