Think back to the bridge in Chicago. The bridge was built with many different types of angles. One such angle is an obtuse angle that measures 115°. This angle is supplementary to another angle. What angle is its supplement?
The supplement of an angle is the angle that, when added to the original angle, equals 180°.
Therefore, if the obtuse angle measures 115°, its supplement would be:
180° - 115° = 65°.
So, the supplement of the obtuse angle measuring 115° is 65°.