Answer:
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Explanation:
If a parallelogram has at least one right angle, this means that the opposite angles also measures 90 degrees because opposite angles are congruent in a parallelogram. Also, The other angles will then add up to 180 degrees but due to them being equal, they also will measure 90 degrees.
Hence, A parallelogram with at least one right angle is a rectangle.
![\rule[225]{225}{2}](https://img.qammunity.org/2022/formulas/mathematics/high-school/3icqlwn6du2l5ygbr7z2lp6sjjralcpq09.png)
Hope this helped!
~AH1807