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軌跡 直線 (與兩平行線等距)
Author:
W.L. Wong, Albert
Topic:
Straight Lines
GeoGebra
New Resources
兩位數加法
算柱 (兩位數)
近似值：有效數字
畫出對稱圖形
拼砌四邊形
Discover Resources
量度活動所用的時間 (時、分)
涌动
生活中的平面圖形─多邊形的性質
探索三角形SAS全等性質
Pyth2LK
Discover Topics
Normal Distribution
Similarity Transformation or Similarity
Vectors 3D (Three-Dimensional)
Real Numbers
Upper and Lower Sum or Riemann Sum