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Another name for a coordinate plane is a Cartesian plane. It is named after the mathematician and philosopher René Descartes, who introduced the concept of using two perpendicular number lines to locate points in space. The horizontal line is called the x-axis, and the vertical line is called the y-axis. Points are located on the plane using ordered pairs (x, y).
* Cartesian co-ordinate system * The complex plane is called Argand Plane
A triangular pyramid has 5 planes. * * * * * In fact, a triangular pyramid is also known as a tetrahedron and as its name suggests, it has 4 plane faces.
A positive plane is just like any other artwork layer - it shows where copper will be. A negative plane, like the name suggests, shows where there will not be copper.