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congruent (SSS) 2
Author:
Ricky Chan
GeoGebra
New Resources
三位數除以一位數（一）
找出對稱軸
【案例】2018年全国1卷理科12题
球體建築師
畫出對稱圖形
Discover Resources
Task 4 Square
PreEnigma-1
帕普斯定理：齊次座標
P6 圓周03D
碎形四邊形
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Difference and Slope
Secant Line or Secant
Random Experiments
Arithmetic
Planes