Theory
Exercises
1. 
Parallel and intersecting lines
Difficulty: easy 
1

2. 
Calculation of the angle if the sum is an extended angle
Difficulty: easy 
1

3. 
Crosswise and onesided corners
Difficulty: easy 
1

4. 
Creative ex_ Intersection Points
Difficulty: medium 
3

5. 
Side angles
Difficulty: easy 
1

6. 
Side angles
Difficulty: easy 
1

7. 
Adjacent angles, given their ratio
Difficulty: medium 
2

8. 
Intersecting Lines in a Cube
Difficulty: hard 
2

9. 
Calculate the angle
Difficulty: medium 
2

10. 
Calculate the angle and find x
Difficulty: hard 
3

11. 
Find the angle
Difficulty: medium 
3

12. 
Angles
Difficulty: hard 
1

Tests
1. 
TRAINING TEST
Difficulty: medium 
10
