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Classifying Triangles

Math – Gd. 6 Unit 3. Classifying Triangles. Measurement: Shape and Space. By Vernon Savoury. What is a Triangle?. A triangle is a polygon (closed figure) with 3 sides and 3 angles . angle. side. side. angle. angle. side. Triangles can be classified by:.

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Classifying Triangles

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  1. Math – Gd. 6 Unit 3 Classifying Triangles Measurement: Shape and Space By Vernon Savoury

  2. What is a Triangle? A triangle is a polygon (closed figure) with 3 sides and 3 angles. angle side side angle angle side

  3. Triangles can be classified by: • the size of their angles • the length of their sides

  4. Classifying Trianglesby the size of theirAngles

  5. Acute Triangle • A triangle with all angles acute • (less than 90 degrees) acute acute acute

  6. Right Triangle • A triangle with one angle equal to 900. 900

  7. Obtuse Triangle • A triangle with one angle greater than 900 but less than 1800 . Obtuse angle

  8. Classifying Trianglesby the length of theirSides

  9. Scalene Triangle • A triangle with all sides of different length. 5 cm 4 cm 6 cm

  10. Isosceles Triangle • A triangle with two sides equal. 8 cm 8 cm 6 cm

  11. Equilateral Triangle • A triangle with all sides equal. 8 cm 8 cm 8 cm

  12. Properties of Triangles • The sum of all the angles is equal to 1800. 600 300 900 + 1800 600 300 900

  13. What is the size of the missing angle? To find the missing angle, subtract the two given angles from 1800. 450 ? = 1800 – 450 – 900 = 450 900 ?

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