A quadrilateral has two of its angles as 30∘ and 40∘. What type of quadrilateral can it be?
In square and rectangle each angle is 900.
In a parallelogram, two adjacent angles have to be either equal or supplementary. The angles 30∘ and 40∘ are neither supplementary nor equal. So, the two angles cannot belong to a parallelogram.
For trapezium, there are no such restrictions. So, the given qudrilateral is a trapezium.