Sunday 25 September 2016

TYPES OF LINES


In our ordinary life we can find different types of lines everywhere. In geometry, we are going to study three types of lines. Could you name the lines regarding the following images? 






The three types of lines are: 


Intersecting lines
Perpendicular lines

Parallel lines
Two or more lines that meet at a point are called intersecting lines. That point would be on each of these lines.
In Figure 1, lines l and m intersect at Q. This is called point of intersection.
Two lines that intersect and form right angles are called perpendicular lines. The symbol is used to denote perpendicular lines. In Figure 2, line l line m. Two lines, both in the same plane, that never intersect are called parallel lines. Parallel lines remain the same distance apart at all times.
The symbol // is used to denote parallel lines. In Figure 3, l // m.








Figure 1 Intersecting lines



Figure 2 Perpendicular lines.










Figure 3 Parallel lines.





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