Can someone help me with this??

Which is a true statement about an exterior angle of a triangle a. it is formed by two segments that are not sides of the triangle, b. it forms a linear pair with one of the interior angles of the triangle, c. it is complementary to one of the interior angles of the triangle. d. it is formed by two segments that are sides of the triangle.

Which inequality comparing two of the expressions is true when 0.7 < x < 0.9

If two lines form congruent alternate interior angles with a transversal, then the lines