Chapter 10 - Geometry - 10.1 Points, Lines, Planes, and Angles - Exercise Set 10.1 - Page 616: 17

complement: $1^o$ supplement: $91^o$

RECALL: Supplementary angles have a sum of 180 degrees. Complementary angles have a sum of 90 degrees. The complement of the given angle is: $=90^o-89^o \\=1^o$ The supplement of the given angle is: $=180^o-89^o \\=91^o$