The difference between two one-sided angles at the intersection of two parallel secant lines is 50 °. Find these corners.

One-sided angles add up to 180 °. Let’s designate one of the angles as x, then the second angle has a degree measure (180 ° – x). According to the condition of the problem, the difference between these angles is 50 °. We get the equation:
180 ° – x – x = 50 °
2x = 130 °
x = 65 °.
The degree measure of the second angle is:
180 ° – 65 ° = 115 ° or /
65 ° + 50 ° = 115 °.
Answer: The degree measure of one-sided angles is 65 ° and 115 °.