Respuesta :

Here you need to know that supplement is Equal to 180

Here how u would do it
51+ x=180
solve for x
x=180 - 51
x= 129

So c is the answer to your question

ashishdwivedilVT

The measure of the supplement of the given angle 51° is 129°.

What is the supplement of an angle?

When one angle α is a supplement of other angle β then

α+β = 180.

It is given that

α = 51°

β = 180-α

β = 180-51°

β = 129°

Therefore, the measure of the supplement of the given angle 51° is 129°.

To get more about supplement visit:

https://brainly.com/question/1045562

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