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square & Triangle
Author:
Alex Leong
GeoGebra
New Resources
第八周作业
画直线等分三角形的面积
異分母分數減法
球体的体积推导（优化版）
兩位數加法
Discover Resources
複合形體的表面積(凹形)
Angle (Extended 1)
Rotation
分段函數
鸚鵡螺旋線
Discover Topics
Interest Calculation
Secant Line or Secant
Square
General Quadrilateral
Optimization Problems