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Outline
相似形應用_進階_Collection
Slope of a Line
perpendicular lines
distance between point-line
Proof without words: Cosine Rule (餘弦公式)
areas of similar triangles
Similar Triangles, exercise 1
垂線斜率_1
相似形應用_進階_Collection
Author:
Reinhold Yen
Slope of a Line
perpendicular lines
distance between point-line
Proof without words: Cosine Rule (餘弦公式)
areas of similar triangles
Similar Triangles, exercise 1
垂線斜率_1
Next
Slope of a Line
New Resources
兩位數除以一位數（一）
找出對稱軸
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算柱 (兩位數)
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Centroid or Barycenter
