Given: mangleorp = 80° mangleorn = (3x + 10)° prove: x = 30 3 lines are shown. a line with points p, r, n intersects a line with points m, r, o at point o. a line extends from point r to point l between angle m r p. angle n r o is (3 x + 10) degrees and angle p r o is 80 degrees. which statement could be used in step 2 when proving x = 30? a 2-column table with 5 rows. column 1 is labeled statements with the entries measure of angle o r p = 80 degrees semicolon measure of angle o r n = (3 x + 10) degrees, blank, blank, blank, blank. column 2 is labeled reasons with the entries given, blank, blank, blank, blank. angleorp and angleorn are a linear pair angleorp and angleorn are vertical angles 80 = 3x +10 x = 30