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翰林數學_2下_CH4-1_平行線的特性與定義
Author:
翰林數學
GeoGebra
New Resources
異分母分數減法
找出對稱軸
畫出對稱圖形
兩組對邊相等和有直角的四邊形
兩位數除以一位數（二）
Discover Resources
GeoGebra繪本
DSE Circle-ACT01A Relationship between Chords and Centre of a Circle
qid_39321
七彩勾股树
加减乘除运算出题器
Discover Topics
Parallelogram
Upper and Lower Sum or Riemann Sum
Fractal Geometry
Vectors
Triangles