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學習單：三角形任一外角與內角關係
Author:
Tsai, Dung Jung
,
Tim Brzezinski
GeoGebra
New Resources
錐體建築師
兩組對邊相等和有直角的四邊形
四邊形的特性
柱體建築師
畫出對稱圖形
Discover Resources
圓的平移
Bayes' Thm
線性規劃
趣味数学
面积平分线
Discover Topics
Translation
Line Segment
Similarity Transformation or Similarity
Quadratic Equations
Cosine