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周界2
Author:
s1104340
Topic:
Algebra
GeoGebra
New Resources
四邉形 (四年級) 教師版
拼砌四邊形
兩位數除以一位數（一）
畫出對稱圖形
兩組對邊相等和有直角的四邊形
Discover Resources
分數除以分數圖解
电子表格建点
transformation_reflection
定周长的正多边形面积变化规律
長方形的周界與長和闊的關係 (教師版)
Discover Topics
Variance
Ellipse
Integers
Dilation
Incircle or Inscribed Circle