Unit 4

2.  By Their Sides
 By Their Angles

3.  Scalene
 Isosceles

4.  No sides are the same length

5.  At least two sides are the same length

6.  Acute
 Right
 Obtuse

7.  Acute triangles have three acute angles

8.  Right triangles have one right angle

9.  Obtuse triangles have one obtuse angle

10. Right Scalene

11. Obtuse Isosceles

12. Acute Scalene

13. Acute Isosceles

14. Obtuse Scalene

15. Right Isosceles

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