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Author:
Altmann Cho
GeoGebra
New Resources
兩位數除以一位數（一）
四邊形的特性
球体的体积推导（优化版）
【案例】2013年安徽高考15题
找出對稱軸
Discover Resources
T4 Geobra
中國火柴遊戲二的副本
雙曲線(上下型)標準式
S3 Ex4.3 Q06(3D圖)
夾擠定理 (The Squeeze Theorem)
Discover Topics
Pythagoras or Pythagorean Theorem
Incircle or Inscribed Circle
Integral Calculus
Step Functions
Bar Chart or Bar Graph