A.
Two angles are supplementary when they add up to 180 degrees. Then, from the given figure, we can note that the angles supplementary to angle1 are angle2 and angle3
B.
Congruent angles are angles with exactly the same measure. From the given picture, the angles congruent to angle5 are angle8, angle1 and angle4
C. Angle3 is congruent to angle 6 because they are Alternate Interior Angles. Thiese angles are the angles formed on the opposite sides of the transversal.
D. In this case, angle2 measure 112 degrees. Since angle 7 is congruent to angle2 then
