Is it possible to construct a quadrilateral ABCD in which a b is equals to 5 centimetre BC is equals to 7.5 CM angle A is equals to 80 degree angle b is equals to 140 degree and Angle C is equals to 145 degree .if not give reason why

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Solution

It is NOT POSSIBLE as sum of angles of quadrilateral should be equal to 360. You can add 80+140+145 and see that it is equal to 365 and we have not even considered the 4th angle. So ABCD can't be consturcted with such informtion

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