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Subject :IMO    Class : Class 6
Arrange the following steps of construction of an angle 120° in a correct order. Steps of construction: (1) Draw a ray PQ. (2) With B as a centre, again draw an arc to intersect the first arc at C. (3) With P as a centre and a convenient radius, draw an arc to intersect at A. (4) Join CP to get the required angle. ∠CPQ measures 120°. (5) With A as a centre, draw an arc with the same radius to intersect the previous arc at B. A(1)-(4)-(2)-(3)-(5) B(1)-(3)-(5)-(2)-(4) C(1)-(2)-(3)-(5)-(4) D(1)-(3)-(2)-(5)-(4)

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