Grade 03: Triangles: Right, Obtuse, or Acute

Math Explanation |04:28

Grade 03: Triangles: Right, Obtuse, or Acute

Math Explanation |04:28

This lesson reviews how to determine whether a triangle is right, obtuse, or acute.

©2006 | Grade(s)

Related Topics

  • acute triangle
  • angle
  • Elementary School Math (Grades 3-5)
  • Mathematics
  • obtuse triangle
  • right triangle
  • triangle

EXPERIENCE Personalization

Take advantage of the exciting personalization functionality, giving you a unique dashboard populated with curated content channels and teacher resources—all segmented by grade level—supporting your individual lesson-planning needs.


Access on-demand teaching strategies, interactive professional development courses, and membership to the Discovery Educator Network—one of the largest professional networks of educators in the world.

EXPERIENCE New Inspiration

Add flexibility to your lesson plans through a variety of stimulating, multimodal resources while also creating a more engaging learning environment and meeting the varied wants and needs of diverse learners.

Find the high-quality content educators want and students need by exploring Experience today