For a complete lesson on classifying triangles such as acute triangles, go to http://www.yourteacher.com - 1000+ online math lessons featuring a personal math teacher inside every lesson! In this lesson, students learn to classify triangles as acute (all angles acute), right (one angle right), or obtuse (one angle obtuse). Students also learn that the sum of the measures of the angles of a triangle is 180 degrees, and students are asked to use this formula to find the measures of missing angles in given triangles.
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