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semicircle
Author:
Tzeng, Shyuh-yaur
GeoGebra
New Resources
錐體建築師
三位數除以一位數（一）
【案例】2018年全国1卷理科12题
拼砌四邊形
四邉形 (四年級) 教師版
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angles sum of a triangle 2
繡曲線04
Copy of 畫三角形 題1a
我的第一个绘本
GeoGebra 動畫開關按鈕製作的副本
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Cone
Centroid or Barycenter
Cuboid
Trigonometry
Secant Line or Secant