Answer:
EF = 12
Step-by-step explanation:
Given that,
E is the midpoint of DF. So, it can be written as follows :
DE = EF
We have, DE = 6x and EF = x + 10
Putting all the values, we get :
6x = x + 10
taking like terms togther
6x-x = 10
5x = 10
x = 2
Since, EF = x + 10
EF = 2+10 = 12
Hence, the value of EF = 12.
