Review the basics of lines, line segments, and rays. Identify and draw lines, line segments, and rays in practice problems.

Learn the difference between lines, line segments, and rays. Created by Sal Khan.

Unit 1: Lines About this unit Learn what lines, line segments, and rays are and how to use them.

In this example of measuring a line segment, the numbers span across the positive and negative. Remember, line segments and points are the foundations of geometry, so this is an important concept.

In everyday language, you might call it a line, but we'll call it a line segment, 'cause we'll see when we talk in mathematical terms, a line means something slightly different.

Learn how to use the midpoint formula to find the midpoint of a line segment on the coordinate plane, or find the endpoint of a line segment given one point and the midpoint.

So AB is our radius, line segment AB, and so is line segment-- let me draw another point on here, let's say this is X-- so line segment AX is also a radius. Now you can also have other forms of lines and …

You can find the distance between point a and the midpoint using the distance formula (a good explanation is in another Khan Academy video - https://www.khanacademy.org/math/geometry/hs …

This video provides an interactive exercise that emphasizes the significance of accurate definitions, helping learners develop their mathematical communication skills and enhance their grasp of geometry.

The line over the letters AB means "line segment". It is the distance between points A and B.