CK-12: Victor Cifarelli's "Geometry: Triangle Inequality Theorem"

Take notes as you watch the videos and read this section to learn about the triangle inequality theorem. This section provides applications of the triangle inequality theorem, which states that any side of a triangle must be equal to or less than the sum of the other two sides in order to form the triangle. Then, complete the practice problems. These exercises will provide you with the opportunity to apply the triangle inequality theorem.