Triangle Exterior Angle Sum Theorem

作者：GreenMaths

Move the sliders what do you notice about the exterior angle and the interior opposite angles. you can move the sliders back and drag the points to change the shape of the triangle.

探索資源

example-trisector
Constellations
Théorème 1 et 2
Gradient (Slope) : Dynamic Illustration
Proving a cubic function is decreasing.

探索主題

旋轉
雙曲線
分段函數
不等式
算術運算

Triangle Exterior Angle Sum Theorem

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