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Classifying Triangles from the Pythagorean Theorem

Move points A and B to change the triangle into an acute, right, or obtuse triangle. Watch what happens to the relationship of a² + b² versus c². Can you determine the relationship between the Pythagorean Theorem and the type of triangle?
Jerel L. Welker, Matt James Lincoln Southwest HS Lincoln, NE jwelker@lps.org, mjames2@lps.org