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.

Students will be able to

Q1:

Complete the sentence: The sum of the lengths of any two sides in a triangle is the length of the other side.

Q2:

Is it possible to form a triangle with side lengths 6 m, 7 m, and 18 m?

Q3:

Which of the following lists could be the lengths of sides of a triangle?

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