What is the relationship between perpendicular lines?

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Solution

Perpendicular lines are the straight lines that make a right angle when they intersect each other. The perpendicular lines are denoted with the symbol $⊥$ .
Suppose there are two lines $m$ and $n$ .
Both the lines intersect each other at an angle $90^{°}$ and are perpendicular. It can be written as $m ⊥ n$ .
If two lines are perpendicular then the product of their slope will be $- 1$ .

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