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.
Acute Triangle - YourTeacher.com - Geometry Help is a free educational video by yourteachermathhelp.It helps students in grades 4 practice the following standards 4.g.a.1.
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1. 4.g.a.1 : Draw points, lines, line segments, rays, angles (right, acute, obtuse), and perpendicular and parallel lines. Identify these in two-dimensional figures..
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