Answer
Statements
1. M-N-P-Q on $\overline{MQ}$
4. MN+NP+PQ=MQ
Reasons
1. Given
2. Segment Addition Postulate
3. Segment Addition Postulate
Work Step by Step
Statements 1 is given in the problem. Statements 2 and 3 use the Segment Addition Postulate in different combinations along line MQ. Statement 4 is the desired conclusion that can be proven with the Substitution Property of Equality.