Give the correct order for the set of statements.
Prove: The complements of the same angle are congruent to each other.
1. Subtracting m23 from each side, mz1 = mz2.
2. The complements of the same angle are congruent to each other.
3. m22+ m23 = 90°
4. Suppose 21 and 22 are both complements of 23.
5. By substitution, mz1+ m23 = mz2+ m23.
6. m21+ m23 = 90