### Home > GC > Chapter 1 > Lesson 1.1.5 > Problem 1-42

1-42.

Estimate the size of each angle below to the nearest 10°. A right angle is shown for reference so you should not need a protractor. Homework Help ✎

c.

Look at how these angles relate to the right angle.

100°

170°

Use the same method as part (a).