Construct an angle of 120^(@), using ruler and compasses only.

STEPS OF CONSTRUCTION (i) Draw a ray OA. (ii) With O as centre and a convenient radius, draw a long arc, cutting OA at P. (iii) With as centre and the same radius as above, draw an arc, cutting the previous arc at Q. (iv) With Q as centre and the same radius, draw yet another arc, cutting the arc drawn in Step (ii) at R. (v) Join OR and produce it to a point B. Then, angleAOB is the required angle of measure 120^(@).

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SOLVED: draw an angle 120 using compass and bisect it for 60

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How to construct 120 degrees angle with the help of ruler and compass only ?

Draw the following angle using ruler and compasses. Also label them. 120^{o}