Refer to the figure shown here to complete the following problems.
A diagonal line t intersects 2 parallel horizontal lines. The angles formed with the top line are a,b,c,d, and the bottom line e,f,g,h.
a. What kind of angles are c and f ?
b. What kind of angles are d and h?
c. What kind of angles are b and g?
d. What do we call line t ?