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Triangle_6_Q
Author:
ralphchen
GeoGebra
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【案例】圆柱体内放置一个大球六个小球
祖冲之的期望：内棋与外棋
垂直線的斜率
探究三角形的全等條件
平行線的斜率
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好玩的輪盤
相似三角形
圓內接四邊形 ABCD ...，求 sinθ=?
交流电的模拟
第八周作业2
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Trapezoid
Tree Diagrams
Parallelogram
Cone
Centroid or Barycenter