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图案A
Author:
吉顺国
GeoGebra
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三位數除以一位數（一）
球体的体积推导
【案例】2018年全国1卷理科12题
畫出對稱圖形
兩位數加法
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方格紙
test area
向量分解：解聯立
三角函數圖形的平移
勝者即正義，可愛即正義～(可用Ctrl+滑鼠滾輪放大界面)
Discover Topics
Percentages
Centroid or Barycenter
Logarithm
Circumcircle or Circumscribed Circle
Tangent Function