Triangles: categorization by angle or equal sides | 4th grade | Khan Academy
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Triangles: categorization by angle or equal sides | 4th grade | Khan Academy
Scalene, isosceles, equilateral, acute, right, obtuse. All are types of triangles but what makes them special depends on the method of categorization. Watch this outstanding explanation. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-geometry-topic/cc-4th-classifying ...
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