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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
三位數除以一位數（一）
畫出對稱圖形
四邉形 (四年級) 教師版
直角坐標平面上的旋轉變換
找出對稱軸
Discover Resources
座標工具檔
圓周 (圖形F)
工作紙題2
解聯立方程
Error (誤差)
Discover Topics
Sphere
Random Experiments
Distributions
Functions
Numbers
