Final answer:
The pair of supplementary angles is ZRXZ and ZYXZ.
Step-by-step explanation:
The pair of angles that are supplementary are ZRXZ and ZYXZ (option A).
Two angles are considered supplementary when the sum of their measures is equal to 180 degrees. In this case, the sum of the measures of angles ZRXZ and ZYXZ is 180 degrees, making them supplementary.