In a parallelogram, if one angle is 65^o, then what is the measure of its adjacent angle?

Let the adjacent angles be x.

The adjacent angles in a parallelogram are supplementary.

Therefore, 65^o + x = 180^o

⇒ x = 180^o - 65^o

⇒ x = 115^o

Hence, if one angle is 65^o, then its adjacent angle will be 115^o.