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. 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
EQUILATERAL – 3 congruent sides
ISOSCELES – at least two sides congruent
EQUILATERAL
SCALENE – no sides congruent
SCALENE
ISOSCELES
Classifying Triangles by Their Angles
EQUIANGULAR – all angles are congruent ACUTE – all angles are acute
EQUIANGULAR
RIGHT – one right angle
ACUTE
RIGHT
OBTUSE – one obtuse angle
OBTUSE
Can You Classify the Different Triangles in the Picture Below?
Classify the following triangles: AED, ABC, ACD, ACE
The Classifications…
Triangle AED = Equilateral, Equiangular Triangle ABC = Equilateral, Equiangular Triangle ACD = Isoceles, Obtuse Triangle ACE = Scalene, Right
So how did you do?