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CHAPTER 6.4
In this chapter
Parallel Lin^,
Pupils should be able to:
• start to recognise the
angular connections Perpendicular Lines
between parallel lines,
perpendicular lines and
transversals
and Transversals
6.4.1 Perpendicular lines
Perpendicular lines are straight lines that meet at right angles (90°).
We say they are perpendicular to each other.
The symbol used to
state that two lines are
A square is the symbol
perpendicular is 1.
used on a diagram to
show that two lines are
perpendicular, These two lines are
perpendicular.
Are these lines
^ADC is a right angle.
perpendicular? So, AB is perpendicular to CD.
We write AB 1 CD.
Parallel lines
Parallel lines are two or more lines that are the same distance apart. They will
never meet or intersect.
Arrow heads are the
These two lines
symbols used on a _
are parallel.
diagram to show that
two lines are parallel.
•• Think and Share
Can you see the parallel lines?
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UNIT 6 I Angles and Their Properties
