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相同圖形的拼砌（三角形）
Author:
ho ting chit
Topic:
Triangles
GeoGebra
New Resources
兩位數除以一位數（二）
球體建築師
【案例】2018年全国1卷理科12题
兩組對邊相等的四邊形
異分母分數減法
Discover Resources
教學－旋轉
尤拉線
三角比的性質
Congruent Triangle (SSS)
七下数学案例教程2-对顶角和邻补角例题
Discover Topics
Tangent Function
Random Experiments
Centroid or Barycenter
Angles
Piecewise Functions