Theory
1.  Introduction  
2.  Distance formula 
Exercises
1. 
Distance and abscissa
Difficulty: easy 
3

2. 
Distance between two points
Difficulty: easy 
3

3. 
Find the unknown value
Difficulty: easy 
4

4. 
Calculate the perpendicular distance
Difficulty: easy 
3

5. 
Determine the distance between the points
Difficulty: medium 
4

6. 
Find the distance between the points
Difficulty: medium 
4

7. 
Calculate the sides of the parallelogram
Difficulty: medium 
4

8. 
Calculate the sides of the rectangle
Difficulty: medium 
4

9. 
Calculate the sides of the right angled triangle
Difficulty: medium 
3

10. 
Determine the sides of an isosceles triangle
Difficulty: medium 
3

11. 
Find the side and diagonals of the square
Difficulty: hard 
5

12. 
Determine the radius
Difficulty: hard 
5

13. 
Observe the graph and answer the questions
Difficulty: hard 
6

14. 
Find the side and diagonals of the rhombus
Difficulty: hard 
5

15. 
Case study: Distance formula
Difficulty: hard 
5

Tests
1. 
Training test I
Difficulty: easy 
10

2. 
Training test II
Difficulty: medium 
11

3. 
Training test III
Difficulty: medium 
12
