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TRI NGLES 2 ways to classify: By Sides By Angles 60 4” 4” 4” 60 60
45 6” 6” 90 45 4” 130 6” 4” 25 25 7”
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TRI NGLES Equilateral CLASSIFYING BY THEIR SIDES
All sides are the same length Equilateral 3” 3” 3”
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TRI NGLES Isosceles CLASSIFYING BY THEIR SIDES
Exactly 2 sides are the same length 4” 4” 3”
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TRI NGLES Scalene CLASSIFYING BY THEIR SIDES
No sides are the same length 4” 2” 5”
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TRI NGLES Acute CLASSIFYING All angles are acute 60 60 60
BY THEIR ANGLES Acute All angles are acute 60 60 60
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TRI NGLES Right CLASSIFYING 1 angle is a right angle 45 90 45
BY THEIR ANGLES 1 angle is a right angle Right 45 90 45
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TRI NGLES Obtuse CLASSIFYING 1 angle is an obtuse angle 140 20 20
BY THEIR ANGLES 1 angle is an obtuse angle Obtuse 140 20 20
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