### Home > CCG > Chapter 9 > Lesson 9.2.2 > Problem 9-79

Unlike a straightedge, a ruler has measurement markings. With a ruler, it is fairly simple to construct a line segment of length

With a ruler, construct a line segment of

cm. What about

cm? Adjust your line segment from part (a) so that its length is cm. Did your line get longer or shorter? Draw the original line segment of

cm, then add to it as directed.

Note that the line does not become that much longer if the change you're making is very small.Now change the line segment so that its length is

cm. How did it change? Karen wants to draw a line segment is exactly

centimeters long. Is this possible? Why or why not? The line will lengthen, but it will never be exactly