This document provides examples and non-examples of triangles in 10 sections, with the final section labeled "Teacher help" and the last line stating "The End". It appears to be teaching materials about the properties of triangles and what does and does not qualify as a triangle through examples and counterexamples.

1. Triangle
Examples Non-Examples

2. Examples Non-Examples

3. Examples Non-Examples

4. Examples Non-Examples

5. Examples Non-Examples

6. Examples Non-Examples

7. Examples Non-Examples

8. Examples Non-Examples

9. Examples Non-Examples

10. Examples Non-Examples

11. Examples
Non-Examples

12. Examples Non-Examples

13. Teacher help
The End