Please help me pls

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.

If sec theta = 5/3 and the terminal point determined by theta is in quadrant 4, then

Paul’s car is 18 feet long. he is making a model of his car that is 1/6 the actual size. what is the length of the model?