1. determine the sum of the following a+e
2. f+b
3. c+g
4. d+h
5. (a+e)+(b+f)+(c+g)+(d+h)
6. (a+b+c+d)=________(recall the sum of the interior angles of a quadrilateral)
7. (e+f+g+h)=_________
8. the sum of the exterior angles of a quadrilateral is________
pasagot please
