AutoCAD supplies a list of inquiry commands which assist you in getting information about an entity or group of entities or to calculate an area of a plane.

**DISTANCE (DIST):** This command helps you to measures the distance and angle between any two points.

Command: DIST (return) First point: Second point:

**Result:** Distance = calculated distance Angle in XY plane = angle, Angle from XY plane = angle Delta X = change in X, Delta Y = change in Y, Delta Z = change in Z

**AREA:**This command calculates the area and perimeter of selected objects (Area and circumference in case of circles).

Command: AREA(return) <First point> / Object / Add / Subtract: This command allows you options like:

Option |
Use |

First Point | Calculates the area and perimeter you define by selecting points. All points must lie in a plane parallel to the XY plane |

Object | Calculates the area and perimeter of the selected object. You can calculate the area of circles, ellipses, splines, polylines, polygons, regions, and solids |

Add | Turns on Add mode and keeps a running balance of additions and subtractions |

Subtract | Turns on Subtract mode, which works the same as Add mode, except that it subtracts areas and perimeters |

**LIST:** This command displays information about the selected objects.

Command: LIST (return) Select objects: Suppose that you have selected a circle of colour green and linetype hidden then,

LIST displays: CIRCLE Layer: 0 Space: Model space Color: 3 (green) Linetype: HIDDEN Handle = <value> Center point, X= <co-ordinate> Y= <co-ordinate> Z= <co-ordinate> Radius <number> Circumference <number> Area <number>

**ID (IDentify point):** This command displays the X, Y and Z co-ordinate values of a selected point.

Command: ID (return) Point: (select a point)

**HELP** This command allows you to display the Help table of contents. Press F1 or choose Contents from the Help menu. To display help for a menu, open the menu, and then press F1 or to get information about any command, invoke HELP command transparently by putting a single apostrophe. Command: HELP or ? (return) or Press Function Key F1