The Corresponding Angles Theorem states: If two parallel lines<span> are cut by a </span>transversal<span>, then the </span>pairs<span> of corresponding angles are </span>congruent. A theorem is aproven<span> statement or an </span>accepted<span> idea that has been shown to be true.</span>
If you want your answer in an equation it should be this C=2n but you have then to complete solving it because you have more information than you gave. Good luck!