What is the Triangle Inequality Theorem - Congruent Triangles

The video tutorial explains the triangle inequality theorem, which helps determine if three sides can form a triangle. It covers examples of equilateral, isosceles, and scalene triangles, demonstrating how the theorem applies to each. The video also provides examples and non-examples to illustrate when three sides do or do not form a triangle, emphasizing that the sum of any two sides must be greater than the third side.

What must be true about the sum of any two sides of a triangle compared to the third side?

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Provide an example of three lengths that do not form a triangle and explain why.

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Why can't the sum of two sides of a triangle be equal to the length of the third side?

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