Supplementary angles sum to 180 degree
Let one angle be x
Then the other angle is x+80
Summing the 2 angle gives
x+x+80=180
2x+80=180
2x=180-80
X=50
Thus the angles are 50 degree and 50+80= 130 degree
Perpendicular
Hope this helps!
Its either rational or not a real number but i think its not a real nmber
I would say its d
the pentagon has no right angles or acute angles (at least thats what it looks like) so i believe it is has all obtuse angles.
The answer would be 2 to 1 because if you simplify for every one unshaded piece you have 2 shaded pieces