Theory
Exercises
1. 
Find the position of the points
Difficulty: easy 
2

2. 
Find the value of the line segment from the centre
Difficulty: easy 
2

3. 
Determine the length of 'PR'
Difficulty: medium 
3

4. 
Find the length of 'XY'
Difficulty: medium 
3

5. 
Find the length of 'PQ'
Difficulty: medium 
3

6. 
What is the length of the specified line segment?
Difficulty: hard 
5

7. 
Find the lengths of 'BD' and 'BC'
Difficulty: hard 
6

Tests
1. 
Training test
Difficulty: medium 
7
