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# Triangles

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### Triangles

1. 1. Classifying Triangles 12/03/09 Geometry <ul><ul><li></li></ul></ul>
2. 2. Two Ways to Classify Triangles <ul><li>By Their Sides </li></ul><ul><li>By Their Angles </li></ul>12/03/09 Geometry <ul><ul><li></li></ul></ul>
3. 3. Classifying Triangles By Their Sides <ul><li>Scalene </li></ul><ul><li>Isosceles </li></ul>12/03/09 Geometry <ul><ul><li></li></ul></ul>
4. 4. Scalene Triangles <ul><li>No sides are the same length </li></ul>12/03/09 Geometry <ul><ul><li></li></ul></ul>
5. 5. Isosceles Triangles <ul><li>At least two sides are the same length </li></ul>12/03/09 Geometry <ul><ul><li></li></ul></ul>
6. 6. Classifying Triangles By Their Angles <ul><li>Acute </li></ul><ul><li>Right </li></ul><ul><li>Obtuse </li></ul>12/03/09 Geometry <ul><ul><li></li></ul></ul>
7. 7. Acute Triangles <ul><li>Acute triangles have three acute angles </li></ul>12/03/09 Geometry <ul><ul><li></li></ul></ul>
8. 8. Right Triangles <ul><li>Right triangles have one right angle </li></ul>12/03/09 Geometry <ul><ul><li></li></ul></ul>
9. 9. Obtuse Triangles <ul><li>Obtuse triangles have one obtuse angle </li></ul>12/03/09 Geometry <ul><ul><li></li></ul></ul>
10. 10. Classify this triangle. 12/03/09 Geometry <ul><ul><li></li></ul></ul>Right Scalene
11. 11. Classify this triangle. 12/03/09 Geometry <ul><ul><li></li></ul></ul>Obtuse Isosceles
12. 12. Classify this triangle. 12/03/09 Geometry <ul><ul><li></li></ul></ul>Acute Scalene
13. 13. Classify this triangle. 12/03/09 Geometry <ul><ul><li></li></ul></ul>Acute Isosceles
14. 14. Classify this triangle. 12/03/09 Geometry <ul><ul><li></li></ul></ul>Obtuse Scalene
15. 15. Classify this triangle. 12/03/09 Geometry <ul><ul><li></li></ul></ul>Right Isosceles
16. 16. 12/03/09 Geometry <ul><ul><li></li></ul></ul>This powerpoint was kindly donated to www.worldofteaching.com http://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching.