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Right Angled Triangles Wolfram Alpha Demonstration

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Scalene Isosceles Equilateral Acute Obtuse Right Triangle

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Scalene Isosceles Equilateral Acute Obtuse Right Triangles

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OUR LESSONS MATCHED TO YOUR TEXTBOOK/ STANDARDIZED TEST: http://www.MathHelp.com Students learn the definition of a triangle, as well as the following triangle classifications: scalene, isosceles, equilateral, acute, obtuse, right, and equiangular. Students also learn the triangle sum theorem, which states that the sum of the measures of the angles of a triangle is 180 degrees.

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Triangle Song | Types of Triangles Song | Classifying Triangles

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Triangle Learning Video

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Triangles: using angles to categorize | 4th grade | Khan Academy