2 years ago

(02.07)

1 answer:

4 0

<h3>Answer: Choice B) 180 - x = r</h3>

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Explanation:

Angles r and x form a straight line, or straight angle, that is 180 degrees.

We then can say

r+x = 180

r+x-x = 180-x .... subtract x from both sides

r = 180-x

180-x = r

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