For the given figure, which one is the mirror line, $ l_{1} $ or $ l_{2} $ ?
"
To do:
We have to find the mirror line in the given figure.
Solution:
Mirror line:
A mirror line is a line which can be drawn onto a shape to show that both sides have reflective symmetry.
When the given figure is folded about the line $l_2$ the left part exactly covers the right part and vice versa.
Therefore,
In the given figure, $l_2$ is the mirror line.
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