Question

What are two lines that are perpendicular?

Answer 1

Perpendicular lines:

Two lines are said to be perpendicular when they intersect each other at $90°$.

If lines $m$and $n$are perpendicular, it is denoted as $m\perp n$.

If lines $y=m_{1}x+c$ and $y=m_{2}x+c$ are perpendicular to each other, $m_1=-\frac{1}{m_2}$, where $x,y$are coordinate points, $m_1,m_2$ are slope of the two lines and $c$is the Y-intercept.