Question

It didn't let me put the whole picture, so here are the words/word it cut out.

Answer 1

Answer:

The options to complete the proof are placed in the boxes of the attached drawing created with Microsoft Word

Step-by-step explanation:

Please see attached drawing of the proof created with Microsoft Word

The two column proof can be  presented as follows;

Statement     ${}$                                    Reason

 $\underset{m}{\leftrightarrow } \parallel \underset{n}{\leftrightarrow }$        ${}$                                        Given

m∠3 + m∠4 = 180°   ${}$                         Linear pair postulate

∠1 ≅ ∠3     ${}$                                        Corresponding Angle Theorem

m∠1 + m∠4 = 180°   ${}$                          Transitive Property      

m∠1 and m∠4 are supplementary  ${}$ Definition of supplementary angles