Perpendicular lines and angles formed by them
If two lines intersect and all four angles are equal, then each angle must be a right angle \((90°)\).
Perpendicular lines are a pair of lines which intersect each other at right angles (\(90°\)).
In the above figure, we can say that lines \(a\) and \(b\) are perpendicular to each other. It has written down .
Parallel lines:
When two lines are in the same plane and will never intersect each other is known as Parallel lines.
Parallel lines are a pair of lines that lie on the same plane, and do not meet however far we extend them at both ends.
The above figure shows parallel lines \(AB\) and \(CD\). Where two lines \(AB\) and \(CD\) are in the same plane but will never intersect each other and hence are termed as parallel lines.
Example:
We can see that the garage shelf parallel to each other. There are many other day-to-day examples for this idea.
