Two angles are supplementary. The first angle measures 60°. What's the measurement of the second angle?
2 answers:
Answer: Option D
120°
Step-by-step explanation:
By definition it is said that two A and B angles are supplementary if the sum of A and B is equal to 180 °
In this case we know that one of the angles is 60 °
This is: A = 60 °
So to find the second angle we propose the following equation:

Then we solve the equation for B.


So the second angle is 120 °
The answer is option D
Answer:
D
Step-by-step explanation:
The sum of supplementary angles is 180°
To find the supplement of 60° subtract it from 180°, that is
second angle = 180° - 60° = 120° → D
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