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三心
Author:
林銓柔
GeoGebra
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異分母分數減法
画直线等分三角形的面积
兩位數除以一位數（一）
找出對稱軸
球體建築師
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北區模考非選第二題 (2014.03.06)
Apollonius Problem gergonne 1
Chapter 11
gjh-a02-hippocrates 月牙
学习 GeoGebra 3D 计算器
Discover Topics
Intersection
Isosceles Triangles
Geometric Distribution
Tangent Line or Tangent
Cylinder