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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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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 Tool for Proof
Right Triangles Form a right angle Perpendicular Slopes Facts Tool for proof
Scalene Triangles No Congruent Sides No Right Angle
Is GUB a right triangle? Explain Task 6
Perpendicular Slopes The slopes do not show perpendicular lines, therefore triangle GUB is not a Right Triangle.
Determine which type of figure it is and justify your answer Task 6
Determine which type of figure it is. Justify your answer Task 7
Determine which type of figure it is and justify your answer Task 8
Give an equation of a line that includes an altitude of triangle EFG. Justify. Task 9
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