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Triangles

Triangles. TOPIC 9 LESSON 9-5. Triangles can be classified by their sides. 3 equal sides. equilateral triangle. Triangles can be classified by their sides. 2 equal sides. isosceles triangle. Triangles can be classified by their sides. 0 equal sides.

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Triangles

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  1. Triangles TOPIC 9 LESSON 9-5

  2. Triangles can be classified by their sides. 3 equal sides equilateral triangle

  3. Triangles can be classified by their sides. 2 equal sides isosceles triangle

  4. Triangles can be classified by their sides. 0 equal sides scalene triangle

  5. Triangles can also be classified by their angles. 1 right angle right triangle One angle measures 90 degrees. The other 2 are acute or less than 90 degrees.

  6. Triangles can also be classified by their angles. 3 acute angles acute triangle All angles measure less than 90 degrees.

  7. Triangles can also be classified by their angles. 1 obtuse angle obtuse triangle One angle measures greater than 90 degrees.

  8. Classify this triangle by its sides and angles.

  9. Did you say. . . equilateral, acute? 3 equal sides, 3 acute angles

  10. Classify this triangle by its sides and angles.

  11. Did you say . . . isosceles, right? 2 equal sides, one right angle

  12. Classify this triangle by its sides and angles.

  13. Did you say . . . scalene, obtuse? 0 equal sides, 1 obtuse angle

  14. Can you classify this triangle by its sides and angles?

  15. Did you say . . . scalene, right? 0 equal sides,1 right angle

  16. Classify this triangle by its sides and angles.

  17. Did you say. . . isosceles, acute 2 equal sides, 3 acute angles

  18. Now you know how to identify triangles.

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