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No; 40°,140°,120° and 100° cannot be the angles of a quadrilateral.

If we add 40°,140°,120° and 100° we get 400°

But angle sum property of a quadrilateral states that the sum of angles of a quadrilateral is 360°

Hope this helps.....  


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Noooo because it does not follow sum of angles prperty.............

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