The value of QR for the given line will be 15 units.
<h3>What is a line segment?</h3>A line section that can connect two places is referred to as a segment.
The line is here! It extends endlessly in both directions and has no beginning or conclusion.
In other terms, a line segment is merely a section of a larger, straight line that extends indefinitely in both directions.
Given,
PQ = RS
PR = 18
PS = 21
Now,
RS = PS - PR
RS = 21 - 18 = 3
So,
PQ = 3
Now,
QR = PR - PQ
QR = 18 - 3
QR = 15
Hence the value of QR will be 15 units.
For more about line segment
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