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Question
Draw an angle of 140° with the help of a protractor and bisect it using ruler and compasses.
Solution
Steps of construction:
(i) Draw ∠BAC = 140° with the help of protractor.
(ii) With A as centre and any convenient radius, draw an arc, cutting AC and AB at Q and P respectively.
(iii) With centre P and radius more than `1/2 (hat(PQ))`, draw an arc.
(iv) With centre Q and the same radius as before, draw another arc, cutting the previously drawn arc at a point S.
(v) Join AS and produce it to any point X. Then, ray AX bisects ∠CAB.
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