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Geometry 5.1 Classifying Triangles

Geometry 5.1 Classifying Triangles. What is Triangle. Figure formed when three non-collinear points are connected by segments. You know 3 sides 3 angles. Parts of a Triangle. vertex. E. angle. side. D. F. The plural of side is Sides The plural of angle is Angles

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Geometry 5.1 Classifying Triangles

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  1. Geometry 5.1Classifying Triangles

  2. What is Triangle • Figure formed when three non-collinear points are connected by segments. • You know • 3 sides • 3 angles

  3. Parts of a Triangle vertex E angle side D F

  4. The plural of side is • Sides • The plural of angle is • Angles • The plural of vertex is • Vertices

  5. Naming Triangles • Triangles are named by the letters at their vertices. • Triangle DEF is written Δ DEF E D F

  6. Classify • Group things together based on a common characteristic. • What kind of things do we classify everyday...

  7. Classify People • Height • Weight • Gender • Intelligence • Strength • Activity/do • Music • Appearance • Nationality • Religion • Age • Eye Color

  8. Classification Angles Acute Obtuse Right Sides Equilateral Isosceles Scalene

  9. Classify by Angles • Acute Triangles have all acute angles

  10. Classify by Angles • Obtuse Triangles have one obtuse angle

  11. Classify by Angles • Right Triangles have one right angle

  12. Classify by Sides • In Equilateral Triangles all sides are congruent

  13. Classify by Sides • In Isosceles Triangles two sides are congruent

  14. Classify by Sides • In Scalene Triangles none of the sides are congruent

  15. Classify The Triangle • Obtuse - Isosceles

  16. Classify The Triangle • Right - Scalene

  17. Classify The Triangle • Right – Isosceles

  18. Classify The Triangle • Equilateral – Acute

  19. 5.14-16, 26-34

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