Introduction to point, plane and
space.
Coordinate axes, in right-handed coordinate system.
The three coordinate axes taken in pairs determine the three coordinate
planes
the (horizontal) xy-plane, where z=0
the (vertical) yz-plane, where x=0, and
the (vertical) xz-plane, where y=0.
A point P in space is said to have rectangular coordinates (x, y,
z)
if
-
x is the signed distance of P from the yz-plane,
-
y is the signed distance of P from the xz-plane, and
-
z is the signed distance of P from the xy-plane.
