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In this activity, students will apply knowledge of the triangle inequality theorem to determine if the three sides given can form a triangle--as they color! Students will color problem numbers on the mandala with 2 opposing colors of their choice--a dark color if the sides given can form a triangle, and a light color if the sides given cannot form a triangle. This is a fun way to practice their essential geometry skills, and students are usually motivated to do any work that involves coloring! In addition, this activity makes great sub plans and creates beautiful classroom decor when the students are done. Give your students a chance to practice their skills and have fun at the same time with this activity!