Perpendicular lines are two straight lines that cross each other to make a square 90-degree angle, also known as a right angle. You can see them in the corners of a square, on a plus sign (+), or where two roads cross straight across from each other.

Intersecting lines are two or more straight lines that cross or meet each other at a single common point, known as the point of intersection. They share exact properties regarding the angles they create and can be seen in everyday objects