What is the reason for Statement 2 of the two-column proof? Ruler Postulate Angle Addition Postulate Angle Congruence Postulate Linear Pair Postulate. Statements Reasons 1. m∠PQS=50° Given 2. ∠PQS and ∠SQR are supplementary. 3. m∠PQS+m∠SQR=180° Definition of supplementary angles 4. 50°+m∠SQR=180° Substitution Property of Equality 5. m∠SQR=130° Subtraction Property of Equality 6. ∠SQR is an obtuse angle. Definition of obtuse angle