Solution
For this case we can find the area of each triangle in the following way:
Total area is:
A= 1*1 =1
We can assume that the lenght of each side of the square is 1 then we can find the area of a like this:
a = 1/2 (1/2*1/2) = 1/8
c = 1/2 (1/2*1/2) = 1/8
We can find the area of part b like this:
b= 1/2 - 1/8 -1/8 = 1/4
We can find the proportion for the figure d like this:
d= 1/2 (1/2*1/2)= 1/8
And for the part e we can do the following:
e= 1/2 - 1/8= 3/8