One of the angles formed by two intersecting lines is 42°. What is the measure of the other three angles?
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Answer:

42, 138, 138

Step-by-step explanation:

the line not adjacent to the 42 degree angle is also 42 by the vertical angles theorem. Then you find the measure of the other 2 by x+42=180 so x=138.

42,138,138 correct
The line not adjacent to the 42 degree angle is also 42 by the vertical angles theorem then you find the measure of the other 2 by x+42=180 so x=138 this is correct but there’s more ways to do too ...