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trigo ratios np2c
Author:
np2cmath
GeoGebra
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祖冲之的期望：内棋与外棋
直線的斜率
多邊形的面積
探究三角形的全等條件
圓的切線方程
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車輪
GGB小組演示作業範例2
三角形外心的軌跡
向量的座標變換矩陣與線性組合
F1 Chapter 8 - Rotation in Coordination Plane(Advanced)
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Logarithm
Unit Circle
Diagrams
Similar Triangles
Isosceles Triangles