Answer:
Step-by-step explanation:
What immortal hand or eye,
Could frame thy fearful symmetry?
This is an example, right at the beginning of the poem.
It's a little bit of an exaggeration and for dramatic effect by asking for a hand that is so invincible to contain the fearfulness of the tiger or an invincible eye to be able to look and frame it without being frightened.
Hope this helped!