Step Statements Reasons 1 segment UV is parallel to segment WZ Given 2 Points S, Q, R, and T all lie on the same line. Given 3 m∠SQT = 180° Definition of a Straight Angle 4 m∠SQV + m∠VQT = m∠SQT Angle Addition Postulate 5 m∠SQV + m∠VQT = 180° Substitution Property of Equality 6 m∠VQT + m∠ZRS = 180° Same-Side Interior Angles Theorem 7 Substitution Property of Equality 8 m∠SQV + m∠VQT − m∠VQT = m∠VQT + m∠ZRS − m∠VQT m∠SQV = m∠ZRS Subtraction Property of Equality ∠SQV ≅ ∠ZRS Definition of Congruency What is the missing statement for step 7? (2 points) m∠SQV + m∠VQT = 180° m∠VQT + m∠ZRS = 180° m∠SQV + m∠VQT = m∠VQT + m∠ZRS m∠SQV + m∠SQT = 18