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
55°
55 degrees
35°
To determine the value of y degrees, we need to use the relationship between supplementary angles. Supplementary angles are two angles whose measures add up to 180 degrees.
In this case, the angle at the top left and the angle at the top right are supplementary angles. If the angle at the top left is x degrees and x = 125 degrees, then the angle at the top right must be 180 - x.
Therefore, y degrees = 180 - 125 = 55 degrees.
So the value of y degrees is 55°.