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earth
Author:
chen mingchuan
GeoGebra
New Resources
探究三角形的全等條件
多邊形的面積
【案例】2018年全国1卷理科12题
圓周公式的應用
兩位數除以一位數(一)
Discover Resources
固定三角形的條件−題6
棋盤的 L 形覆蓋
證平行四邊形 (對角相等)
動態正方形(未完成)
S0G4L2 到两点距离的运算为定值
Discover Topics
Orthocenter
Statistical Characteristics
Trigonometry
Continuity
Centroid or Barycenter