How long is line segment \( C D \) ?

To determine the length of line segment \( CD \), we typically apply the distance formula if we have the coordinates of points \( C \) and \( D \). The formula is given by \( d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} \). Just plug in the coordinates for points \( C(x_1, y_1) \) and \( D(x_2, y_2) \) to find the distance! In practical scenarios, such as architecture or computer graphics, calculating lengths accurately is essential. By knowing how to find the distance between points, professionals can ensure precision in layouts, designs, and models, directly impacting the functionality and aesthetics of their projects.