Coordinate Axes and Distance in 3D
Extending the ideas of coordinate geometry from a flat plane into three-dimensional space.
3D Coordinate System
A point in space is located using three coordinates $(x, y, z)$, measured along three mutually perpendicular axes.
Distance Formula in 3D
$$d = \sqrt{(x_2-x_1)^2 + (y_2-y_1)^2 + (z_2-z_1)^2}$$Lesson 20 of 27