AABC is similar to ADEF.
Find x.
perimeter of triangle DEF= 60

Find AC using Pythagorean theorem
6^2 + 8^2 = AC^2
36 + 64 = AC^2
100 = AC^2
10 = AC

6+8+10 = 24

24/60 = 2/5

10/x = 2/5
50 = 2x
25 = x

We need the pictures of the graphs