In Exercises 11 14 identify all pairs of angles of the given type See Example 3 11 corresponding 12 alternate interior 13 alternate exterior 14 consecutive interior 15 25 and 21 34 17 26 and 213 USING STRUCTURE In Exercises 15 18 classify the angle pair as corresponding alternate interior alternate exterior or consecutive interior angles 56 34 78 56 8 9 10 11 12 13 14 15 16 16 211 and 413 18 42 and 4