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勾股定理（几何原本）１
Author:
夜雨嘀嗒
GeoGebra
New Resources
直線的斜率：水平變化 & 鉛垂變化
斐波那契螺旋弧线（表格法-可动态调节）
第三周作业效果演示
异形操场
三角函数 的副本
Discover Resources
test01
Proof1 楊玉峰
齿轮咬合
Quiz on Addition and Subtraction of Directed Numbers (2)
圆锥曲线的产生
Discover Topics
Vectors
Statistics
Vectors 2D (Two-Dimensional)
Calculus
Right Triangles