Supplementary of 123 degree is ______?
- 50
- 55
- 57
- 29
Explanation
Supplementary of 123 degrees is 57o
Solutions
Two angles (90+90) are said to be supplementary if the sum of their measures is 180o.
The given angle is 123o
Let the measure of its supplementary be xo.
Then, = x + 123 = 180
= x = 180 – 123 = 57o
Hence, the supplementary of the given angle measures 57o.
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