<span>1) m<1+m<2=180 ========> supplementary angles </span><span>2) m<3+m<2=180 ========> opposite angles are equal (vertical angles theorem) </span>3) m<3 and m<5 are supplementary ====> <span>Consecutive Interior Angles</span> 4) L || M =====> corresponding angles converse.(If two lines cut by a transversal so that corresponding angles are congruent,then the lines are parallel to each other.)
Let's take the difference between the old and new (70 - 60) to get 10 and then divide this by the old (70) amount...10/70 = .142857 convert to a percent by moving the decimal 2 spaces to the right... 14.29 %
