Find the undeveloped corners at the intersection of two lines if one is 38 degrees larger than the other.
November 27, 2020 | education
| When two straight lines intersect, two pairs of adjacent angles are formed.
Let one of the adjacent angles be x degrees, then the second of the adjacent angles is x + 38 degrees. We know that the sum of the degree measures of adjacent angles is 180 degrees. Let’s make the equation:
x + x + 38 = 180;
x + x = 180 – 38;
x + x = 142;
x * (1 + 1) = 142;
x * 2 = 142 (in order to find an unknown factor, you need to divide the product by a known factor);
x = 142: 2;
x = 71 degrees – one of the adjacent angles;
71 + 38 = 109 degrees is the second of the adjacent angles.
Answer: 71 degrees; 109 degrees; 71 degrees; 109 degrees.
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