Help Please! △ABC is given with line m drawn through A parallel to BC¯¯¯¯¯¯¯¯. In the course of proving that the interior angle measures of △ABC sum to 180°, which of the following will be shown? Select the two correct answers.

∠1≅∠B

∠1≅∠C

m∠1+m∠BAC+m∠2=180°

m∠BAC+m∠C+m∠2=180°

∠2≅∠A