First published in Songs of Experience in 1794, the first stanza of the poem “The Tyger” by William Blake is:

Tyger! Tyger! burning bright
In the forests of the night,
What immortal hand or eye
Could frame thy fearful symmetry?

It is easy to guess that in those years that was the way tiger used to be written.

On the other hand, symmetry is not a rhyme for bright, night, eye by today’s usual pronunciation.

Was it ever a rhyme?