# Chapter 2 exercises

- Author:
- Jorge Cássio

- Topic:
- Angles

1- Check the correct alternatives (can be more than one). (Dolce & Pompeu)

2- Check the correct alternatives (can be more than one). (Dolce & Pompeu)

3- (Dolce & Pompeu-adapted) Consider that the supplement of three times the complement of half of an angle is equal to three times the complement of that angle. Then the angle measures:

4- (Dolce & Pompeu-adapted) The bisectors of two consecutive angles form an angle of 52º. If one of them measures 40º, then the other measures:

5- (Dolce & Pompeu-adapted) The angles and and are opposed by the vertex. The angles are measured in degrees. The first angle is 9x-2 and the second is 4x + 8. Determine these angles.