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保持2:3:4
Author:
hjyanghj
Topic:
Geometry
GeoGebra
New Resources
三位數除以一位數（一）
算柱 (兩位數)
球體建築師
柱體建築師
兩位數加法
Discover Resources
正七邊形
微分的意義
向量分解：解聯立
同旁內角---不平行綫
相反数 探究 （教材第9页）
Discover Topics
Geometric Mean
Circumcircle or Circumscribed Circle
Ellipse
Bar Chart or Bar Graph
Centroid or Barycenter