Answer:
ΔFDE ~ ΔFSR by the SSS similarity theorem
Step-by-step explanation:
Corresponding sides have the same ratios:
... FD/FS = 88/32 = 11/4
... DE/SR = 121/44 = 11/4
... EF/RF = 143/52 = 11/4
So, the triangles are similar by the SSS similarity theorem.
