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∠CBDm∠CBD ?(1 point) Responses 165° 165 degrees 75° 75 degrees 180° 180 degrees 15°
1 answer
The sum of the measures of supplementary angles is always 180 degrees. Since angle ABC has a measure of 15 degrees, angle CBD must have a measure of 180 - 15 = 165 degrees. Therefore, the value of angle CBD is 165 degrees.