coordinate entry methods in AutoCAD

Question
How many coordinate entry methods are there available in AutoCAD?

Answer
In AutoCAD, there are five methods for specifying the locations of points when we

create planar geometric entities.

Interactive method: Use the cursor to select on the screen.
Absolute coordinates (Format: X,Y): Type the X and Y coordinates to locate the
point on the current coordinate system relative to the origin.

Relative rectangular coordinates (Format: @X,Y): Type the X and Y
coordinates relative to the last point.

Relative polar coordinates (Format: @Distance<angle): Type a distance and
angle relative to the last point.

Direct Distance entry technique: Specify a second point by first moving the
cursor to indicate direction and then entering a distance.