# One of the adjacent angles is: 1) 45 °; 2) 120 °; 3) 18 °. Find the second corner.

October 11, 2021 | education

| It is known that the sum of the degree measures of adjacent angles is 180 degrees.

1) 180 – 45 = 135 degrees – the second of the adjacent angles, since the first angle is 45 degrees;

2) 180 – 120 = 60 degrees – the second of the adjacent angles, since the first angle is 120 degrees;

3) 180 – 18 = 162 degrees – the second of the adjacent angles, since the first angle is 18 degrees.

Answer: 1) 135 degrees; 2) 60 degrees; 3) 162 degrees.

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