In this lesson, we are going to go over the triangle inequality theorem. When we are talking about triangle inequality, we are comparing different sides and angles together. So, the triangle inequality theorem says that the sum of the lengths of any two sides of a triangle is greater than the length of the third side. This means that if you are going to add up any two sides, that is going to be greater than just directly from a point to another point. Using this theorem, you can determine if the three given numbers can represent the sides of a triangle.
*These practice questions are only helpful when you work on them offline on a piece of paper and then use the solution steps function to check your answer.
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.