Lines p and q are cut by a transversal t. ∠1 is the angle above line p and to the right of t; ∠2 is the angle below line q and also to the right of t. If ∠1=∠2, what can you conclude?
a) p∥q
b) ∠1 and ∠2 are corresponding angles
c) No definite relation between p and q can be concluded
d) p⊥q