TRUE OR FALSE

42. Vertical angles are formed when two lines intersect each other.

43. Vertical angles are sometimes not congruent.

44. Two angles are supplementary if their sum is 180º.

45. Two angles are complementary if their sum is 90⁰.

46. Vertical angles are complementary.

47. Complementary angles are sometimes adjacent.

48. The angles of a linear pair are sometimes adjacent.

49. A complement of an acute angle is obtuse.

50. A supplement of an obtuse angle is obtuse.​