Big Ideas Math Integrated I, 2016
BI
Big Ideas Math Integrated I, 2016 View details
1. Points, Lines, and Planes
Continue to next subchapter

Exercise 2 Page 381

Line segments, such as KL, are defined only by their endpoints.

LK

Practice makes perfect

KL is the line segment from point K to point L. Let's highlight KL in the diagram.

Line segments are defined only by their endpoints, which are K and L in this case, and have no sort of "direction" of any kind — the order of K and L does not matter when naming the line segment. Therefore, we can give the line segment the alternative name LK.