So, if we have a triangle right here and you want to find a median, first thing you're going to have to is find the midpoint of that side. To connect it to the other midpoint you're going to have to find that midpoint and you could connect those and that would be one of your mid segments. There's going to be three mid segments in every triangle.
The absolute value of -8 is 8 here’s a trick the absolute value of a positive is the same number of its negative it’s the same number but positive hope it helps