Use the image to answer the question.
An illustration shows a horizontal line with arrows at both ends. Another line with arrows at both ends extends from top right to bottom left and intersects the horizontal line in the center. The intersecting line creates 4 angles. The angle at the top left is labeled x degrees. The angle at top right is labeled y degrees. The angles at bottom left and right below the horizontal line are not labeled.
Use the relationship between supplementary angles to determine the value of y° if x°=125°.
(1 point)
Responses
305°
305 degrees
125°
125 degrees
35°
35 degrees
55°
According to the relationship between supplementary angles, when two angles are supplementary, the sum of their measures is 180 degrees.
Since x° is 125° and it is the angle at the top left, the angle at the top right would also be 125° because they are vertically opposite angles. Hence, y° = 125°.