Triangle Names and Angle Sum (Interior and Exterior)

Topic:Equilateral Triangles, Isosceles Triangles, Right Triangles, Scalene Triangles, Triangles

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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အခြေခံ data အခေါ်အဝေါ်များ
Perimeter of a Rectangle with Unknown Sides
巧算長方形周界
Tangent Plane to a Sphere
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การแยกตัวประกอบของพหุนามดีกรีสอง

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Circumcircle or Circumscribed Circle
Translation
Normal Distribution
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Solids or 3D Shapes