The order of the x coordinates in the distance formula does not matter, so take whichever difference is easier to compute. The same comment applies to the y coordinates. After squaring the differences in the distance formula, be sure to take the positive square root of their sum. In the examples, you'll practice these two formulas by finding the length of the median of a triangle, and by finding the perimeter and area of a triangle. Make sure that you know and understand how to use both midpoint and distance formulae, as they will be used in a lot of later work.
*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.
Midpoint and Distance Formulas
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.