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Triangle classification and validity worksheet for geometry practice.

A math worksheet with triangle classification problems, including identifying acute, obtuse, right, scalene, equilateral, and isosceles triangles, and determining if given shapes are valid triangles based on angle sums and side lengths.

A math worksheet with triangle classification problems, including identifying acute, obtuse, right, scalene, equilateral, and isosceles triangles, and determining if given shapes are valid triangles based on angle sums and side lengths.

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