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三角測量
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GeoGebra
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折扣
椭圆内切圆链
常见四边形是否是双心四边形
第八周作业3
百分數及其應用
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求 a + b 的最大值?
奠基
旁心
旋轉對稱 Rotational symmetry
纏繞畫1
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Sine
Intersection
Circumcircle or Circumscribed Circle
Random Experiments
Linear Regression