Solve problems using the Triangle Inequality Theorem. SPI 0606.4.3

Links verified on 7/15/2014

- Discover the Triangle Inequality Theorem - a four-page lesson plan designed for 7th grade, a data sheet is included
- Inequalities in Triangles - [designed for high school students] Students use pasta to create models of triangles and non-triangles and investigate the relationship between the longest side of the triangle and the sum of the other two sides of the triangle in this Illuminations lesson plan from NCTM

- Inequality Activity Sheet - to accompany the above lesson
- Licorice Triangles - a teaching idea using licorice shoe laces, and rulers [This expired page is brought to you by the Internet archive, the Wayback Machine.]
- Practice with Triangle Inequality - five multiple choice questions with explanation
[This expired page is brought to you by the Internet archive, the Wayback Machine.]- Triangle Inequalities - explanation from the Regents Prep assessment prep site
- The Triangle Inequality Theorem - explanation that any side of a triangle is always shorter than the sum of the other two sides – includes an interactive java applet
or- Triangle Inequality Theorem - with worked solutions and a video

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