# Does every parallelogram have at least one right angle?

##### 1 Answer
Dec 26, 2015

No, parallelogram can have any pair of supplementary angles as its adjacent interior angles.
For instance, four angles might be ${80}^{o}$, ${100}^{o}$, ${80}^{o}$ and ${100}^{o}$.

#### Explanation:

An example of a parallelogram with no right angles.

By the way, if one angle of a parallelogram is the right angle, all its interior angles are right and it's a rectangle.