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Published byMargaret Adams Modified over 4 years ago

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Types of Triangles

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Angles The angles in a triangle add up to 180 0 60 o + 60 o + 60 o = 180 0

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Triangles can be classified in two ways You can name triangles by their angles You can name triangles by their sides

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Acute Triangle All angles measure less than 90º

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Right Triangle One angle measures exactly 90º

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Obtuse Triangle One angle measures more than 90º

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Scalene Triangle All sides are different lengths

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Isosceles Triangle Two sides have the same length

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Equilateral Triangle All sides have the same length

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Practice Can you name each triangle by its sides and its angles? Scalene and Acute Isosceles and Right Scalene and Obtuse

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Now that you have finished this presentation, return to the math website and start your next activity

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