Which of the following is the reason for statement #7 in the table above?
a. converse of the alt. interior angles theorem
b. converse of the corresponding angles theorem
c. converse of the same-side consecutive angles theorem
d. transitive prop.

40 degrees

Step-by-step explanation:

The answer is 40 degrees. Angle x and angle y form vertical angles, therefore x = y. Angle y forms a straight line with the 80° angle and the 60° angle which means that 80° + 60° + y = 180°. 140° + y = 180°. y= 180° - 140°. y = 40°. As mentioned earlier: x = y, so x = y = 40°.

Hope this helps