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相同圖形的拼砌（有兩組平行線的四邊形）
Author:
ho ting chit
GeoGebra
New Resources
找出對稱軸
第八周作业
四邉形 (四年級) 教師版
直角坐標平面上的旋轉變換
【案例】2018年全国1卷理科12题
Discover Resources
以剪貼比較圖形大小 題3
parallelogram
向量分解
test1(尋找北極星)
PTCCS2new2
Discover Topics
Integers
Pyramid
Pythagoras or Pythagorean Theorem
Geometric Mean
Planes