International Maths Olympiad Forum By SOF Olympiad Trainer - Page 14

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Subject :IMO    Class : Class 4

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Class : Class 4
Statement is not clear

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Subject :IMO    Class : Class 5

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Subject :IMO    Class : Class 5

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Class : Class 5
very tricky ques for me.

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Subject :IMO    Class : Class 5

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Class : Class 5

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Subject :IMO    Class : Class 6

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Subject :IMO    Class : Class 3

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Class : Class 3
brackets were not shown in the question .

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Subject :IMO    Class : Class 8

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Subject :IMO    Class : Class 8

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Subject :IMO    Class : Class 6

Arrange the given steps in correct order of constructing an angle of 30° using ruler and compass. Steps of construction:
(1) Draw a ray AB.
(2) With A as centre and a convenient radius, draw an arc to intersect at X.
(3) Taking Y as a centre and with the same radius draw another arc that cuts the previous arc at C.
(4) With X as a centre, draw an arc with the same radius to intersect the previous arc at Y.
(5) Taking X as a centre and a radius greater than half of XY, draw an arc.
(6) Join A and C to get ray AC. ∠CAB is the required angle.

A(1)-(3)-(2)-(6)-(5)-(4)
B(1)-(2)-(5)-(3)-(4)-(6)
C(1)-(4)-(2)-(3)-(5)-(6)
D(1)-(2)-(4)-(5)-(3)-(6)


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Subject :IMO    Class : Class 4

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