Page 262 - Start Up Mathematics_6
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4. Holding the set square firmly in this
position, draw the perpendicular PQ Do you know?
as shown. Construction has a wide range
of application in Mathematics,
Science, Architecture, Engineering
and Designing.
Q
P l
l
P
In the above construction we can use another set square instead of a ruler.
Using a ruler and compass
1. With P as the centre and some convenient
radius, draw a major arc intersecting line l
at two points A and B.
A P B l
Q
2. With A and B as centres and radius greater
than AP draw two arcs cutting each other
at Q.
l
A P B
Q
3. Join P and Q to obtain the required perpendicular
at P.
l
P
Construction of a Perpendicular to a Given Line Through a Point Not on It
Let’s learn how to construct a line perpendicular
to a given line l from a point P not lying on it
in two different ways. P
Using a ruler and set square
l
1. Place the ruler along line l.
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