# Thread: triangle

1. ## triangle

i think it has something to do with the exterior angle thorem but im not really sure

2. ## Re: triangle

really?

each of these angles is supplementary to each of the interior angles of the triangle.

so their sum is $3\pi - \pi = 2 \pi$

3. ## Re: triangle

The sum of the exterior angles of any convex polygon is $360^\circ$

4. ## Re: triangle

this is not a polygon tho its a triangle . where you add up the angles of the straight lines i get 540 degrees and then i take away 360 cause thats the amount of degrees in a triangle and then im left with 180 .

5. ## Re: triangle

this is not a polygon tho its a triangle
fyi ... a triangle is a 3-sided polygon.

6. ## Re: triangle

thanks for the diagram i understand it now