Use facts about supplementary angles to solve the
following problem. Two angles are supplementary and
have measures and
. What is the value of ?
(1 point)
m∠ABC = 15°
m∠CBD = x° m∠CBD
75°
180°
165°
15°
Since the angles are supplementary, their measures add up to 180°.
m∠ABC + m∠CBD = 180°
15° + x° = 180°
x° = 180° - 15°
x° = 165°
Therefore, the value of x is 165°.