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外凸的正方形
Author:
许业成
GeoGebra
New Resources
錐體建築師
柱體建築師
算柱 (兩位數)
GeoGebra笔记功能体验课件
兩位數除以一位數（二）
Discover Resources
曲柄滑塊模擬
Compound Inequalities(複合不等式)
特殊時鐘模擬
畢氏定理的副本
诱导公式六（90°-α）
Discover Topics
Polynomial Functions
Triangles
Centroid or Barycenter
Tree Diagrams
Reflection