Identify the paragraph proof for the two-column proof.
Given: m∠t = 3 ⋅ m∠s
Prove: m∠s = 45°
Two-Column Proof
1. m∠t = 3 ⋅ m∠s (Given)
2. ∠t and ∠s are supplementary (Lin. Pair Thm.)
3. m∠t + m∠s = 180° (Def. of Supp. ∠s)
4. 3 ⋅ m∠s + m∠s = 180° (Subst. Prop. of = )
5. 4 ⋅ m∠s = 180° (Simplify.)
6. m∠s = 45° (Div. Prop. of = )