Subject :IMO Class : Class 7

Class : Class 5

The option b states that a unique triangle is constructed and it is possible to do so. However option c states that we CANNOT construct the angle 7.5. This is false cause it can be constructed by bisecting an angle of 60, three times.

Class : Class 8

Answer is b as the length of sides of triangle are variable and therefore unique triangle cannot be constructed

Subject :IMO Class : Class 4

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Subject :IMO Class : Class 4

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Subject :IMO Class : Class 4

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Subject :IMO Class : Class 4

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Subject :IMO Class : Class 4

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Subject :IMO Class : Class 6

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Subject :IMO Class : Class 8

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Subject :IMO Class : Class 2