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楕圆第一类定义与准线
Author:
WLS
GeoGebra
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百分數及其應用
平行線的判定
第八周作业2
科赫雪花
正方形雪花图案
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Version 2
軌跡觀察---圓及正三角形上線段中點
congruent (AAA) 2
Angle Between Two Planes Definition 平面與平面間之交角 定義
椭圆的两条垂直切线的交点轨迹
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Calculus
Exponential Functions
Power Functions
Circle
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