The measure of an angle is 51°.

2 answers:

6 0

Supplement of an angle is what must be added to that angle to get 180

51+supplement=180
minus 51 both sides
supplement=129

answer is C

Amanda [17]3 years ago

5 0

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

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