Chapter 10 - Geometry - 10.1 Points, Lines, Planes, and Angles - Exercise Set 10.1 - Page 616: 23

Angle: 135 degrees Supplement: 45 degrees

Let x be the measure of the angle's supplement. Thus, 3x will the angle. x+ (3x) = 180 Solving algebraically, 2x +3x =180 4x= 180 x=180/4 x=45 The angle will be 3x = 45 $\times$ 3 = 135