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Triangle Interior Angles Worksheet and Answer Key

Worksheet Objective

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Students will practice solving problems involving the interior angles of a triangle
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Other Details

This is a 4 part worksheet
  • Part I. Model Problems.
  • Part II. Practice
  • Part III. Challenge Problems
  • Part IV. Answer Key

Example Worksheet Questions

Directions : Use the Interior Angle Sum Theorem to solve each of the problems below
Picture Interior Angles of Triangle

Challenge Problems : Use your knowledge of the interior angles of a triangle as well as supplementary angles to solve the problems below:

Picture Interior Angles of Triangle

Picture Interior Angles of Triangle

Picture Interior Angles of Triangle

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Web Resources

  Download the worksheet (pdf)