👉 In mathematics, a "crux" is an element that divides another into two equal parts. It's like dividing a cake into two halves and saying that one half is the crux of the cake. In geometry, it refers to a line segment or a ray that connects two points on a plane. For example: - The 3rd diagonal (crux) of a square is a line segment connecting opposite corners. - A line segment perpendicular to a given line is called a "cr
