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  • Draw an angle of 140 ^{o} with the help of a protractor and bisect it using ruler and compasses.

Draw an angle of 140o with the help of a protractor and bisect it using ruler and compasses.

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Steps of construction:
(i) Draw  an angle \angle \mathrm{CAB}=140^{\circ} using protractor.
(ii) Draw arcs taking A as the centre and any convenient radius cutting AC at Q and AB at P.
(iii) Now take Q as centre radius more than half of PQ draw an arc.
(iv) Draw another arc, taking centre P and the same radius as before, cutting the previously drawn arc at a point S.
(v) Join AS which bisects \angle C A B.

Posted by

Ravindra Pindel

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