Given: An B = {1, 3}, An C = {1, 2}, Bn C = {1, 4}, AUB = {1, 2, 3, 4, 5, 6}, AUC = {1, 2, 3, 4, 5, 7}, BUC = {1, 2, 3, 4, 6, 7}, An Bn C= {1}, and A UBUC = {1, 2, 3, 4, 5, 6, 7). What are the elements in set A?

Danny draws a transversal, t, on two parallel lines ab and cd, as shown below: he makes the following table to prove that the alternate interior angles are equal: which is the missing justification? (6 points) corresponding angles formed by a transversal on parallel lines are supplementary. corresponding angles formed by a transversal on parallel lines are congruent. co-interior angles formed by a transversal on parallel lines are congruent. co-exterior angles formed by a transversal on parallel lines are congruent.

Through non-collinear points there is exactly one plane.

Given δjkl : δxyz, find x. a)10 b)12 c)16 d)20