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題三
Author:
Tse Sir
GeoGebra
New Resources
异形操场
常见四边形是否是双心四边形
斐波那契螺旋弧线（表格法-可动态调节）
科赫雪花
活动三：应用性质
Discover Resources
柏拉圖宇宙模型
Building Cylinders 建造圓柱體
半角公式證明
我的傑作
三角形三边关系探究习题
Discover Topics
Terms
Similar Triangles
Upper and Lower Sum or Riemann Sum
Indefinite Integral
Function Graph