CONSTRUCTIONS
A
B
P
m
l
Draw a line l
With ‘A’ as centre and radius more than half of AB, draw an arc.
With ‘B’ as Centre and same radius, draw an intersecting arc.
Draw line PQ
Line m ⊥ line l
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With P as centre and any suitable radius, draw two arcs intersecting line l at points A and B.
Take a point P on line l .
Q
To construct a perpendicular from a point on a given line.
BASIC CONSRUCTIONS
Q. Draw a tangent at any point ‘R’ on the circle
of radius 3.4 cm and centre ‘P’.
P
R
P
R
3.4 cm
Rough Figure
Line l is the
required tangent.
Draw line CR
‘B’ as centre and same radius, draw an intersecting arc
‘A’ as centre and radius
more than half of ‘AB’,
draw an arc
‘R’ as centre, and any suitable radius, draw arcs
Produce PR
Draw seg PR
Consider point R on the circle
Draw circle with centre P and radius 3.4cm