Triangles have to have 180 degrees because every polygon must have the degrees by this formula:
(N-2)*180 = degrees, where N stands for the number of sides. If we subtract 3 from 2, we get 1, and multiplied by 180 gives us 180 degrees. This is true for every polygon.
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180 degrees
A hexagon has 6 triangles inside of it. If one triangle equals 180 degrees and there are 6 triangles. 180 degrees *6 triangles=1080 degrees.
3 triangles because there are 540 degrees in a pentagon and 180 degrees in a triangle so 3*180 = 540 degrees
180 degrees... all triangles equal 180.
180 degrees and for quadrilaterals there are 360 degrees. :)