Intersecting lines that form a right angle are defined as ___. A. perpendicular B. parallel C. skew D. planes

If you're looking to ace geometry, remember that when two lines intersect to form a perfect right angle, they're known as perpendicular lines! It's like a heartfelt handshake between two lines, making sure they greet each other at a neat 90 degrees. Perpendicular lines are essential in various real-life applications, such as architecture and engineering, where right angles ensure stability and symmetry. Imagine a tall building—those perpendicular corners help it stand firm against the forces of nature. So next time you see a square or rectangle, thank those trusty perpendicular lines for holding it together!