X

X

X

Roman numeral for 10.

X , Y, Z –axes Syn. Coordinate axis

These are three mutually perpendicular axes in 3- dimensional Cartesian coordinate system. The X-axis is horizontal ; the Y- axis is vertical and Z- axis perpendicular to both X and Y – axis . This is most commonly used coordinate system representing position in space.

X , Y, Z – Coordinate Syn. Cartesian Coordinates ; The position  of a point in space is represented by x, y, z coordinates, usually written as ( x, y, z), where the coordinate is the perpendicular distance from the plane formed by the other two axes.

X , Y, Z  intercepts : These are the distance from the origin to the points at which a curve intersects at X , Y , and Z axes.

Xy , yz , zx planes Syn. Coordinate plans : The planes formed by two coordinate axes in three dimensional Euclidean space. The plane xy contains x and y axes ; yz plane contains y and z axes and zx plane contains z and x axes. The equations of these planes are z = 0, x = 0 and y = 0 respectively.

x-pentomino

A pentomino in the shape of the letter X.