No, a parallelogram has no right angles.
Additional answer
It might do. It could be a square or a rectangle. These are both forms of parallelogram. But it cannot have just one right angle. It either has four or none.
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Yes a parallelogram with a right angle is a square.
A parallelogram with one right angle has four of them. The name for this figure is a rectangle.
A rhombus is an equilateral parallelogram that does not have a right angle.
No because it could be an irregular quadrilateral that includes a right angle. A rectangle has four right angles.Yes, a parallelogram with a right angle is always a rectangle. In fact, in my geometry book, some 55 years ago, such was the definition of rectangle.A parallelogram with one right angle will always have four right angles.It is true that you can draw an irregular quadrilateral with a right angle which is not a rectangle but the figure will not be a parallelogram.
No.