A:A reflection over a line through o that is parallel to kl and mn maps ray lk onto mn and vice versa and the same for rays lo and mo. This means angle u will be mapped onto angle v and vice versa. B:A translation along the directed line segment ml maps line mn onto line kl and angle v onto u.
C:A 180 degree rotation about O maps ray lk onto jj and vice versa and the same for rays lo and mo. This means angle u will be mapped onto angle v and vice versa.