Any exterior angle of a triangle always equals the sum of the two interior opposite angles.
Chat with our AI personalities
At each vertex of a triangle, an exterior angle of the triangle may be formed by extending ONE SIDE of the triangle.
The sum of a regular polygon's exterior angles is 360. 360 divided by 3 is 120.
It is the regular equilateral triangle whose each exterior angle is 120 degrees
Each exterior angle measures 120 degrees
Providing that it's a regular decagon then each exterior angle will measure 36 degrees