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There are many places where we are see the perpendicular lines and parallel lines in our real life.
Just check out the following collage.
Let us discuss the perpendicular cases:
- The sides of the soccer field with the centre lines
- Television screen with its edges
- Some grills in the window design
- Railway track crossing
- Sign of the first aid kit
Let us check the definition of perpendicular line with an example:
Two different lines intersecting each other at right angle or \(90°\) are called perpendicular lines.
Let us check some more examples:
Let us discuss some of the parallel cases:
- Lines in the race field
- Railway track
- Cars in the queue
- Steel rack shelves
- Sides of the road
Two lines are parallel when they do not intersect each other at any point on the plane.
Set Square:
Two triangular instruments in the geometry box are called as 'Set square'.
- Both the set squares has right angles in it.
- One of the set squares is an isosceles triangle with two angles measuring \(45°\) on the equal sides.
- Other set square is a scalene triangle with two angle measuring \(30°\) and \(60°\).
Uses of Set square:
- To construct the specific angles \(90°\), \(45°\), \(30°\) and \(60°\).
- To draw parallel and perpendicular lines.
- To measure the height.
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