1. Classifying Triangles
Subject: Geometry
Grade Level: 6th grade

2. Recap... What are the three different types of angles?
What are their degrees?
11/17/2018
Geometry

3. In what shapes can we find angles?
11/17/2018
Geometry

4. How do you think we could classify angles?
11/17/2018
Geometry

5. Two Ways to Classify Triangles
By Their Sides
By Their Angles

6. Classifying Triangles By Their Sides
Scalene
Isosceles
Equilateral

7. Scalene Triangles
No sides are the same length

8. Isosceles Triangles
At least two sides are the same length

9. Equilateral Triangles
all sides are the same length

10. Classifying Triangles By Their Angles
Acute
Right
Obtuse

11. Acute triangles have three acute angles

12. Right Triangles
Right triangles have one right angle

13. Obtuse Triangles
Obtuse triangles have one obtuse angle

14. Classify this triangle.
Right Scalene

15. Classify this triangle.
Obtuse Isosceles

16. Classify this triangle.
Acute Scalene

17. Classify this triangle.
Acute Isosceles

18. Classify this triangle.
Obtuse Scalene

19. Classify this triangle.
Right Isosceles

20. Triangle Degrees The sum of the measures of any triangle is 180°.
What is the measure of x?
70° x

21. The sum of the measures of any triangle is 180°.
Triangle Degrees
The sum of the measures of any triangle is 180°.
What is the measure of x?
45° x

22. Triangle Degrees The sum of the measures of any triangle is 180°.x
What is the measure of x?
60°
50°