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Angel X measures 42° find the measure of angle Y

Angel X measures 42° find the measure of angle Y-example-1
User PhML
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1 Answer

19 votes
19 votes

Step 1

Use the law that the sum of angles on a straight line is 180° to find y given that x = 42°

Step 2

Using the law

x + y = 180°

After substitution

42 + y = 180

y = 180 - 42

y =138°

User Sberkley
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