Pythagorean Theorem to Classify Triangles: Missing Angles

This Pythagorean Theorem to Classify Triangles: Missing Angles interactive also includes:

Learn to use the Pythagorean Theorem with non-right triangles. Pupils use the interactive to discover the relationship between the lengths of sides for acute and obtuse triangles. They compare the squares of the sides of the triangles to determine whether a triangle is acute, right, or obtuse.

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CCSS: Designed
Instructional Ideas

  • Provide several opportunities to investigate the relationship of sides
  • Review the Triangle Inequality Theorem
Classroom Considerations

  • Individuals should be familiar with the Pythagorean Theorem
  • Requires a free account to access
Pros

  • Includes review questions
  • The interactive provides the correct answer if incorrect answers are given
Cons

  • None
Common Core