99.0k views
5 votes
Find the indicated unknown angle measure.​

Find the indicated unknown angle measure.​-example-1
User Jbduzan
by
7.9k points

1 Answer

3 votes

Answer:

138 degrees

Explanation:

Angle b and the 42 degree angle right next to it are supplementary angles. That means that 42+b=180

b=138

User Christostsang
by
8.5k points