yes it can
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A trapezoid can have either none or two right angles.
It has no right angles. It has two acute angles.
A right trapezoid can have no congruent sides and two right angles.
A trapezium can have at most two right angles. But it need not have any.It is a quadrilateral and so the sum of its four angles must be 360 degrees. If there are 3 right angles then they sum to 3*90 = 270 degrees and so the fourth must be 360-270 = 90 degrees. Therefore it has four right angles and then is no longer a trapezium but a rectangle!
it is not possible