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
55°
125°
35°
305°
The relationship between supplementary angles states that if two angles are supplementary, their sum is equal to 180 degrees.
In this case, we can see that the top left angle (labeled x degrees) and the top right angle (labeled y degrees) are vertical angles and thus, are congruent. Therefore, x° = y°.
Given x° = 125°, we can conclude that y° = 125°.
Therefore, the correct answer is 125°.