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Find the measure of angle b.
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2 votes
Find the measure of angle b.

Find the measure of angle b.-example-1
User Diahann
by
8.6k points

2 Answers

3 votes

Answer:

123+39+b=180 (angle sum of a triangle)

b=180-(123+39)

b=180-162

b=18 °

User Crazylpfan
by
8.0k points
3 votes

Answer:

18

Explanation:

180-123-39=18

User Andrey Tyukin
by
8.2k points
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