Use facts about supplementary angles to solve the following problem. Two angles are supplementary and have measures m∠ABC=15° and m∠CBD=x° . What is the value of m∠CBD

Question

Use facts about supplementary angles to solve the following problem. Two angles are supplementary and have measures  m∠ABC=15°  and  m∠CBD=x° . What is the value of  m∠CBD
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Responses

180°
  180 degrees

15°
  15 degrees

75°
  75 degrees

165°

GPT 3.5 · Answer

The sum of the measures of supplementary angles is always 180°. Since one angle measures 15°, the other angle must measure 180° - 15° = 165°. Therefore, the value of m∠CBD is 165°.