No , a parallelogram can not have a 90 Degree angle .
Reason : A Parallelogram can be defined as a quadrilateral whose two s sides are parallel to each other and all the four angles at the vertices are not 90 degrees or right angles, then the quadrilateral is called a parallelogram.
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A 90 degree angle is a right angle.
A parallelogram doesn't necessarily have any perpendicular sides, but it can. If it has one single 90-degree angle, then it has four of them, and it's a rectangle or square. A parallelogram without perpendicular sides is a rhomboid or rhombus.
Two consecutive angles of a parallelogram always add up to 180 degrees. So, if the figure actually IS a parallelogram, and if it has a 54-degree angle, then it has two of them, and the other two are 124 degrees each.
A right angle is a 90 degree angle.
A right angle is a 90 degree angle.