Answer:
Explanation:
Let's denote the measure of the angle as x.
According to the problem, the angle measures 80.4° more than its supplementary angle. Since supplementary angles add up to 180°, we can write the equation:
x = (180 - x) + 80.4
Simplifying this equation, we get:
x = 180 - x + 80.4
Combining like terms, we have:
2x = 180 + 80.4
2x = 260.4
Dividing both sides by 2, we find:
x = 260.4 / 2
x = 130.2
Therefore, the measure of the angle is 130.2°, and its supplementary angle is 180 - 130.2 = 49.8°.