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TRIANGLES. CLASSIFICATIONS, ANGLES AND MORE!!. Free powerpoints at http://www.worldofteaching.com. Different Types of Triangles. There are several different types of triangles. You can classify a triangle by its sides and its angles.

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triangles

TRIANGLES

CLASSIFICATIONS, ANGLES AND MORE!!

Free powerpoints at http://www.worldofteaching.com

different types of triangles
Different Types of Triangles
  • There are several different types of triangles.
  • You can classify a triangle by its sides and its angles.
  • There are THREE different classifications for triangles based on their sides.
  • There are FOUR different classifications for triangles based on their angles.
classifying triangles by their sides
Classifying Triangles by Their Sides
  • EQUILATERAL – 3 congruent sides
  • ISOSCELES – at least two sides

congruent

  • SCALENE – no sides congruent

EQUILATERAL

ISOSCELES

SCALENE

classifying triangles by their angles
Classifying Triangles by Their Angles
  • EQUIANGULAR – all angles are congruent
  • ACUTE – all angles are acute
  • RIGHT – one right angle
  • OBTUSE – one obtuse angle

EQUIANGULAR

ACUTE

RIGHT

OBTUSE

can you classify the different triangles in the picture below
Can You Classify the Different Triangles in the Picture Below?

Classify the following triangles: AED, ABC, ACD, ACE

the classifications
The Classifications…
  • Triangle AED = Equilateral, Equiangular
  • Triangle ABC = Equilateral, Equiangular
  • Triangle ACD = Isoceles, Obtuse
  • Triangle ACE = Scalene, Right
  • So how did you do?