to find slope use 
which means the answer is -1
What I did was 27.99-21.59 which equals 6.40 and then times that by 12 which brings you to 76.80
12 - 5.25 = 6.75
The other piece is 6.75 inches long
Answer:
c) the size of each exterior angles
A,b,d,e,f,h would be similar because they are all quadrilaterals (they all have four sides) and c,g would be the same because they are both triangles