Triangle Names and Angle Sum (Interior and Exterior)

主題：角度

How to name triangles. The conditions for naming triangles. Proof the sum of interior (inside) angles = 180 deg. Proof the other two angles equal exterior angle.

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Cercle trigonométrique
Sec. 2.8 (1-3)
Logic Assignment 1 Diagram
Transformation Project
shifted parabola 2

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幾何變換
統計特徵
Pythagoras or Pythagorean Theorem
柱體
矩形

Triangle Names and Angle Sum (Interior and Exterior)

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