For middle and high school students, this video showcases a real-world example of how parallel and perpendicular lines are applied in forensic science and archaeology.

Credits:
Images "St. Anthony - Steps of facial reconstruction.jpg", "Saint Valentine - steps of facial reconstruction.jpg" and "Paranthropus_boisei_-_steps_of_forensic_facial_reconstruction.png" by Cicero Moraes are licensed under Creative Commons Attribution 3.0 Unported license.