Triangles: using angles to categorize | 4th grade | Khan Academy
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Triangles: using angles to categorize | 4th grade | Khan Academy
Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/cc-fourth-grade-math/plane-figures/imp-classifying-triangles/v/scalene-isosceles-equilateral-from-angle You say you can't categorize a triangle because you don't know the length of the sides. Guess what? If you know ...
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