Napoleon's Theorem

Author:Nicola Trubridge, Judah L Schwartz

You can drag the red dots about to make any RED triangle you like. Construct a GREEN equilateral triangle on each edge of your triangle. What do you notice about the lines joining the centres of the GREEN triangles?

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အခြေခံ data အခေါ်အဝေါ်များ
What is a Determinant?
直線的斜率：水平變化和鉛垂變化
Pendule 002
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