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Find the measure of the exterior angle

Find the measure of the exterior angle
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3 votes
Find the measure of the exterior angle

Find the measure of the exterior angle-example-1
User Navarr
by
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2 Answers

7 votes
138 degrees is the correct answer.
User Karthik Kompelli
by
8.5k points
7 votes

Answer:

x+9 + 60 = 2x

x+69 = 2x

69 = 1x

x = 69

2x = 2(69)

= 138°

User Aarelovich
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7.4k points
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