Triangle Inequality Theorem - Investigation, Guided Notes, and Assignment

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Math is FUNtastic
Grade Levels
7th - 10th
Formats Included
  • PDF
10 pages
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***NO PREP LESSON*** This ready to use product is designed to help students understand the Triangle Inequality Theorem. Students will start by cutting out 8 pencils of different lengths (1 in - 8 in) and use these to form triangles and non-triangles (Preselected triangle lengths are given on the student work page.) A set of guided notes and an assignment are also included in this product to help reinforce what the students discover through their exploration.

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This purchase is for one teacher only. Additional licenses are available at a discounted price.
Total Pages
10 pages
Answer Key
Teaching Duration
90 minutes
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to see state-specific standards (only available in the US).
Draw (freehand, with ruler and protractor, and with technology) geometric shapes with given conditions. Focus on constructing triangles from three measures of angles or sides, noticing when the conditions determine a unique triangle, more than one triangle, or no triangle.


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