Two points, A and B, are on the pavement 6 inches apart. Cassidy the caterpillar traces out a path walking along all the points that are equidistant to as from . Cassidy has red paint on her feet, so she literally traces out the whole path! What kind of path does Cassidy trace?
Cassidy is walking along the middle line between the two points like if you folded the ground in half between A and B, her path would be the fold. That’s called the perpendicular bisector, but really it’s just the “middle path” that’s the same distance from both points the whole way.