Missed 10 days of Algebra 2. I think they did some Long Division stuff but i need help figuring out how to do this stuff. Detailed explanations would be very much appreciated! Image Below

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.