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20200417平面直角坐标系复习T14（3）
Author:
陈敦莹
GeoGebra
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四邊形的特性
畫出對稱圖形
中華民國國旗 (Codex╱2026.10.06)
Fibonacci Clock
近似值：有效數字
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圓內一點到根軸的距離
題六
四角柱算體積(可以切開)
扇形旋轉2
繪畫正方形
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Parametric Curves
Statistics
Limits
Linear Regression
Volume