Theory
Exercises
1. 
Examine the congruency of the triangles
Difficulty: easy 
2

2. 
Find out the equal parts and angles of triangles
Difficulty: easy 
3

3. 
Find out the corresponding vertices, angles and sides
Difficulty: medium 
3

4. 
Pick the correct congruence relation from the list
Difficulty: medium 
4

5. 
Check the congruency and find its parts
Difficulty: hard 
5

6. 
Write the symbolic expression of the triangle provided
Difficulty: hard 
4

Tests
1. 
Training test
Difficulty: medium 
9
