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ruler
Author:
felixchow
菱形
GeoGebra
New Resources
柱體建築師
判斷球體
找出對稱軸
三位數除以一位數（一）
拼砌四邊形
Discover Resources
waaachen
test area
梯形堆垛
連鎖法則 (Chain Rule)
长方形边线展开
Discover Topics
Constructions
Triangles
Linear Regression
Vectors
Linear Functions