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rectangle_tktcps

Author:: wtlau

GeoGebra Applet

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地球5
lemma-1 for Rotation Search
正弦函数自变量的几何显示
三角函数求值（单位圆、比值）
s2p4_SSA探究_T2F

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圓周角
原子筆的長度
阿帕契直升機
三角形三內角和
正方形所夾三角形面積相等

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Plane Figures or Shapes
Median Line
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