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Classifying Triangles On a Cartesian Plane

Classifying Triangles On a Cartesian Plane. Special Triangles. Isosceles Equilateral Right Triangles Scalene. Isosceles Triangles. Two sides are Congruent Use distance formula. Facts. Tool for Proof. Equilateral Triangle. All sides are congruent Use the distance formula. Facts.

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Classifying Triangles On a Cartesian Plane

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  1. Classifying TrianglesOn a Cartesian Plane

  2. Special Triangles Isosceles Equilateral Right Triangles Scalene

  3. Isosceles Triangles Two sides are Congruent Use distance formula Facts Tool for Proof

  4. Equilateral Triangle All sides are congruent Use the distance formula Facts Tool for Proof

  5. Right Triangles Form a right angle Perpendicular Slopes Facts Tool for proof

  6. Scalene Triangles No Congruent Sides No Right Angle

  7. Is GUB a right triangle? Explain Task 6

  8. Perpendicular Slopes The slopes do not show perpendicular lines, therefore triangle GUB is not a Right Triangle.

  9. Practice

  10. Determine which type of figure it is and justify your answer Task 6

  11. Determine which type of figure it is. Justify your answer Task 7

  12. Determine which type of figure it is and justify your answer Task 8

  13. Determinewhichtypeoffigureit isandjustifyyouranswer Task 9

  14. Give an equation of a line that includes an altitude of triangle EFG. Justify. Task 9

  15. Summary • To classify triangles we use distance formula to prove congruent sides for Isosceles and Equilateral Triangles • We also use slope to prove right angles for Right Triangles. The End

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