# Chapter 1 - Section 1.1 - Angles, Degrees, and Special Triangles - 1.1 Problem Set: 9

$10^{\circ}$ is an acute angle. Complement of $10^{\circ}$ = $80^{\circ}$ Supplement of $10^{\circ}$ = $170^{\circ}$

#### Work Step by Step

Angles that measure between $0°$and $90°$ are called acute angles. Complement of $10^{\circ}$ = $90^{\circ} - 10^{\circ}$ = $80^{\circ}$ (Because sum of the measures of complementary angles is 90 degrees) Supplement of $10^{\circ}$ = $180^{\circ} - 10^{\circ}$ = $170^{\circ}$ (Because sum of the measures of supplementary angles is 180 degrees)

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