Complete each statement with always, sometimes, or never. 1. Two angles that are complementary to the same angle are congruent. 2. Two angles that form a linear pair are congruent. 3. Two angles that are nonadjacent are vertical. a) O 1. always, 2. sometimes, 3. sometimes b) O 1. always, 2. sometimes, 3. always c) O 1. always, 2. always, 3. sometimes d) O 1. sometimes, 2. sometimes, 3. never e) O 1. never, 2. sometimes, 3. always f) ONone of the above