# If a parallelogram has a right angle, is it a rectangle?

Yes, a parallelogram with a right angle has all right angles and is a rectangle.

So, all four angles are right angles and a parallelogram is a rectangle.

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No, a parallelogram with a right angle is not necessarily a rectangle. While a rectangle is a type of parallelogram with four right angles, a parallelogram with just one right angle does not meet all the criteria to be a rectangle. The other angles in a parallelogram with a right angle could be any measure, not necessarily 90 degrees, so it may not have all the properties of a rectangle.

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