In order to quantify the measure of a segment, students must measure the segment using a device such as a ruler that has a unit of measure, or the distance between points may be measured using a number line. To find the measure of a line segment, students need to identify the coordinates of each endpoint. Note to students that latitude and longitude are measured in degrees. Students must use either the latitude or longitude depending on which creates the line segment. When finding the measure of a line segment, the measure is always a positive number.
Students subtract the lesser coordinate from the greater one.
Have students use the latitude and longitude of each. Have students use different units of measurements to find the measure of a line segment. Convert degrees to miles.