Answer:35 degreesStep-by-step explanation:This is because the angles on the same line are supplementary meaning that they add up to 180 degrees. This means that the two angles which are not x are 180 - 90 = 90 degrees and 180 - 125 = 55 degrees. Since the angles in a triangle are also supplementary as well, then 180 - 90 - 55 = 35 degrees.Please mark for Brainliest!! :D Thanks!!For any questions or more information, please comment below and I'll respond as soon as possible.