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Question
Draw an obtuse angle, Bisect it. Measure each of the angles so obtained.
Solution
Steps of construction:
1. Draw angle ABC `of^ 120°`
2. With center B and any radius, draw an arc which intersects AB at P and BC at Q
3. With center P and Q and radius more than `1/2`PQ draw two arcs, with intersect each other
at R.
4. Join BR
∴ `∠`ABR = `∠`RBC= 60°
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