Find the difference. -8 – (-4)

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.

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180

What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?