Lesson: Triangle Inequality Mathematics • Second Year of Preparatory School

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In this lesson, we will learn how to define the triangle inequality and identify whether the given side lengths are valid for constructing a triangle.

Lesson Plan

Students will be able to

understand and use the triangle inequality that states that the sum of the lengths of any two sides in a triangle is greater than the length of the third side,
identify whether the given side lengths are valid for constructing a triangle,
complete geometric proofs using the triangle inequality.