Theory
Exercises
1. 
Find the midpoint
Difficulty: easy 
2

2. 
Verify the statements
Difficulty: easy 
1

3. 
Complete the following
Difficulty: medium 
5

4. 
Find the sum and difference
Difficulty: medium 
3

5. 
Compute the midpoints
Difficulty: hard 
5

6. 
Answer the following
Difficulty: hard 
5

Tests
1. 
Training test
Difficulty: medium 
8
