1. Lesson 13, 18, 39, & Investigation 4: Introduction to Triangles
Unit 4: Triangles
Lesson 13, 18, 39, & Investigation 4: Introduction to Triangles

2. Introduction to Triangles
Goals: To classify triangles by their sides and interior angles. To use inequalities to solve angles and sides in a triangle.
Essential Understandings: Triangles can be classified by their sides and interior angles. The lengths of the sides and measures of the interior angles in a triangle are related through inequalities.

3. Introduction to Triangles
Goals: To classify triangles by their sides and interior angles. To use inequalities to solve angles and sides in a triangle.
Essential Understandings: Triangles can be classified by their sides and interior angles. The lengths of the sides and measures of the interior angles in a triangle are related through inequalities.

4. Introduction to Triangles
Goals: To classify triangles by their sides and interior angles. To use inequalities to solve angles and sides in a triangle.
Essential Understandings: Triangles can be classified by their sides and interior angles. The lengths of the sides and measures of the interior angles in a triangle are related through inequalities.

5. Introduction to Triangles
Goals: To classify triangles by their sides and interior angles. To use inequalities to solve angles and sides in a triangle.
Essential Understandings: Triangles can be classified by their sides and interior angles. The lengths of the sides and measures of the interior angles in a triangle are related through inequalities.

6. Introduction to Triangles
Goals: To classify triangles by their sides and interior angles. To use inequalities to solve angles and sides in a triangle.
Essential Understandings: Triangles can be classified by their sides and interior angles. The lengths of the sides and measures of the interior angles in a triangle are related through inequalities.

7. Introduction to Triangles
Goals: To classify triangles by their sides and interior angles. To use inequalities to solve angles and sides in a triangle.
Essential Understandings: Triangles can be classified by their sides and interior angles. The lengths of the sides and measures of the interior angles in a triangle are related through inequalities.

8. Introduction to Triangles
Goals: To classify triangles by their sides and interior angles. To use inequalities to solve angles and sides in a triangle.
Essential Understandings: Triangles can be classified by their sides and interior angles. The lengths of the sides and measures of the interior angles in a triangle are related through inequalities.

9. Introduction to Triangles
Goals: To classify triangles by their sides and interior angles. To use inequalities to solve angles and sides in a triangle.
Essential Understandings: Triangles can be classified by their sides and interior angles. The lengths of the sides and measures of the interior angles in a triangle are related through inequalities.

10. Introduction to Triangles
Goals: To classify triangles by their sides and interior angles. To use inequalities to solve angles and sides in a triangle.
Essential Understandings: Triangles can be classified by their sides and interior angles. The lengths of the sides and measures of the interior angles in a triangle are related through inequalities.

11. Introduction to Triangles
Goals: To classify triangles by their sides and interior angles. To use inequalities to solve angles and sides in a triangle.
Essential Understandings: Triangles can be classified by their sides and interior angles. The lengths of the sides and measures of the interior angles in a triangle are related through inequalities.

12. Introduction to Triangles
Goals: To classify triangles by their sides and interior angles. To use inequalities to solve angles and sides in a triangle.
Essential Understandings: Triangles can be classified by their sides and interior angles. The lengths of the sides and measures of the interior angles in a triangle are related through inequalities.

13. Introduction to Triangles
Goals: To classify triangles by their sides and interior angles. To use inequalities to solve angles and sides in a triangle.
Essential Understandings: Triangles can be classified by their sides and interior angles. The lengths of the sides and measures of the interior angles in a triangle are related through inequalities.

14. Introduction to Triangles
Goals: To classify triangles by their sides and interior angles. To use inequalities to solve angles and sides in a triangle.
Essential Understandings: Triangles can be classified by their sides and interior angles. The lengths of the sides and measures of the interior angles in a triangle are related through inequalities.

15. Introduction to Triangles
Goals: To classify triangles by their sides and interior angles. To use inequalities to solve angles and sides in a triangle.
Essential Understandings: Triangles can be classified by their sides and interior angles. The lengths of the sides and measures of the interior angles in a triangle are related through inequalities.

16. Introduction to Triangles
Goals: To classify triangles by their sides and interior angles. To use inequalities to solve angles and sides in a triangle.
Essential Understandings: Triangles can be classified by their sides and interior angles. The lengths of the sides and measures of the interior angles in a triangle are related through inequalities.

17. Introduction to Triangles
Goals: To classify triangles by their sides and interior angles. To use inequalities to solve angles and sides in a triangle.
Essential Understandings: Triangles can be classified by their sides and interior angles. The lengths of the sides and measures of the interior angles in a triangle are related through inequalities.

18. Introduction to Triangles
Goals: To classify triangles by their sides and interior angles. To use inequalities to solve angles and sides in a triangle.
Essential Understandings: Triangles can be classified by their sides and interior angles. The lengths of the sides and measures of the interior angles in a triangle are related through inequalities.

19. Introduction to Triangles
Goals: To classify triangles by their sides and interior angles. To use inequalities to solve angles and sides in a triangle.
Essential Understandings: Triangles can be classified by their sides and interior angles. The lengths of the sides and measures of the interior angles in a triangle are related through inequalities.

20. Introduction to Triangles
Goals: To classify triangles by their sides and interior angles. To use inequalities to solve angles and sides in a triangle.
Essential Understandings: Triangles can be classified by their sides and interior angles. The lengths of the sides and measures of the interior angles in a triangle are related through inequalities.

21. Introduction to Triangles
Goals: To classify triangles by their sides and interior angles. To use inequalities to solve angles and sides in a triangle.
Essential Understandings: Triangles can be classified by their sides and interior angles. The lengths of the sides and measures of the interior angles in a triangle are related through inequalities.

22. Introduction to Triangles
Goals: To classify triangles by their sides and interior angles. To use inequalities to solve angles and sides in a triangle.
Essential Understandings: Triangles can be classified by their sides and interior angles. The lengths of the sides and measures of the interior angles in a triangle are related through inequalities.

23. Equations of Lines
Homework:
Worksheet 4.1/5.5