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正方形
Author:
何嘉驹
GeoGebra
New Resources
折扣
第八周作业2
斐波那契螺旋弧线（表格法）
龙形曲线-分形龙2
比較五件物件的重量
Discover Resources
公切線長度的計算
正n凸多邊形旋轉對稱／反射對稱
gjc100a34 兩三角形重疊面積比
分數
纏繞畫
Discover Topics
Tangent Function
Vectors 2D (Two-Dimensional)
Functions
Trapezoid
Pythagoras or Pythagorean Theorem