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Author:
许业成
GeoGebra
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第八周作业3
盈利與虧蝕
平行線的判定
GeoGebra数学资源(4-8年级)
比較五件物件的重量
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內切圓半徑證明
三次函數圖形、極值、反曲點
中点轨迹
正方体展开图的副本
基础知识
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Surface
Triangles
Tangent Line or Tangent
LCM and GCD
Distributions