The pair of blue lines are parallel to one another.  When parallel lines are connected by another line, 3 interesting angles appear.

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1. What's the name for angle x and angle p?
2. What's the name for angle y and angle p?
3. What's the name for angle y and angle q?
4. What's the name for angle y and angle r?

Your choices are: 
(a) Vertically opposite angles.
(b) Interior angles
(c) Corresponding angles.
(d) Alternate angles
(e) Adjacent angles