Answer:
is congruent to
.
OR
AB overbar is congruent to QR overbar.
Explanation:
The given phrase : Line segment AB is congruent to line segment QR.
We know that to represent a line segment MN we write it in the below notation:-
(By putting a bar on the name)
Similarly , Line segment AB can be written as
and Line segment QR can be written as

Therefore , we write the given phrase as :
is congruent to
.