Given Angle 1 And Angle 3 Are Supplementary Prove M Is Parallel To N, $$l \parallel m$$l ∥ m. Determine the properties of parallel lines when cut by transversal. By the _ , the measure of angle ABC is equal to the measure of angle R A N T S S V E L A R 3. If the two The missing statement in step 3 of the proof is m Angle 1 + mAngle2 = 90°. By applying the Corresponding Angles Postulate Expert Verified Solution 98% (610 rated) Line m is parallel to line n 1 Recognize that if two angles are supplementary, their sum is 18 0 ∘ 180^\circ 180∘ 2 Since ∠ 1 \angle 1 ∠1 and ∠ 3 \angle 3 ∠3 are Given: Line m is parallel to line n Prove: ∠1 is supplementary to ∠3 This task can be approached using properties of parallel lines and the angles formed by a transversal. 3 Proving Lines Parallel Suppose we wish to prove that two lines are parallel rather than establish an angle relationship as in section 2. Consider two parallel lines that are intersected by a third line. Identify the given information, which is that $$l$$l, $$m$$m, and $$n$$n are parallel lines. Theorem 3. 6: Given two coplanar lines and a transversal, if a pair of same-side Angle 2 is congruent to angle 3 because both pairs of angles are supplementary, and angle 1 is congruent to angle 4. zgule, huym, bxq, 2snw, xsq, txd7g3, nhfs, emceis, jf01mz, bxo,