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# Triangle classification-1

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### Triangle classification-1

1. 1. Classifying Triangles Free powerpoints at http://www.worldofteaching.com
2. 2. Two Ways to Classify Triangles <ul><li>By Their Sides </li></ul><ul><li>By Their Angles </li></ul>
3. 3. Classifying Triangles By Their Sides <ul><li>Scalene </li></ul><ul><li>Isosceles </li></ul>
4. 4. Scalene Triangles <ul><li>No sides are the same length </li></ul>
5. 5. Isosceles Triangles <ul><li>At least two sides are the same length </li></ul>
6. 6. Classifying Triangles By Their Angles <ul><li>Acute </li></ul><ul><li>Right </li></ul><ul><li>Obtuse </li></ul>
7. 7. Acute Triangles <ul><li>Acute triangles have three acute angles </li></ul>
8. 8. Right Triangles <ul><li>Right triangles have one right angle </li></ul>
9. 9. Obtuse Triangles <ul><li>Obtuse triangles have one obtuse angle </li></ul>
10. 10. Classify this triangle. Right Scalene
11. 11. Classify this triangle. Obtuse Isosceles
12. 12. Classify this triangle. Acute Scalene
13. 13. Classify this triangle. Acute Isosceles
14. 14. Classify this triangle. Obtuse Scalene
15. 15. Classify this triangle. Right Isosceles