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證平行四邊形 (對邊相等)
Author:
W.L. Wong, Albert
GeoGebra
New Resources
拼砌四邊形
【案例】2018年全国1卷理科12题
畫出對稱圖形
兩位數除以一位數（二）
四邉形 (四年級) 教師版
Discover Resources
終點軌跡
glt-h02-06 平行四邊形柱展開
圆在多边形上滚动
龜甲
仿生狗案例
Discover Topics
Similarity Transformation or Similarity
Plane Figures or Shapes
Piecewise Functions
Rational Numbers
Definite Integral