Chapter 3

Selection set

A group of one or more selected objects is called a _________________________________.

Origin

In the Cartesian coordinate system, the __________________________________ is the intersection point of the X, Y, and Z axes.

Absolute Coordinates

In which point entry system are all coordinated measured from the origin?

EDBAC

Matching! Questions: 1. Coordinate values are preceded by the @ symbol. 2. Coordinate values are entered using dynamic input. 3. Coordinate values are measured from the origin. 4. The angle is preceded by a less than (<) symbol. 5. The length and angle are entered in dynamic input fields. Answers: A. Polar coordinate entry B. Absolute coordinate entry C. Dimensional input D. Pointer input E. Relative coordinate entry

FAEBDC

Matching! Questions: 1. Selects all objects in the window and objects crossing the window. 2. Selects all objects that are entirely within an irregular selection shape. 3. Selects every object in the drawing. 4. Selects all objects that are entirely within the polygonal shape. 5. Selects every object it passes through. 6. Selects all objects that are entirely within the window. Answers: A. Window lasso selection B. Window polygon selection C. Window selection D. Fence selection E. All selection F. Crossing selection

Stacked

Objects that overlap so that one is on top if the other are known as ________________________________________ objects.

F

T or F: Circles and lines are examples of polygons.

F

T or F: Editing is a process used to create new objects in a drawing.

F

T or F: Polar tracking can be toggled on and off by picking the Ortho Mode button on the status bar.

F

T or F: The OOPS command has no effect on objects you erased during the most recent editing procedure.

T

T or F: The location of a point is its distance from the origin.

T

T or F: When polar tracking is on, AutoCAD displays alignment paths at specified polar angle increments.

T

T or F: When you use automatic windowing to select objects, the direction in which you move the cursor after picking the first point determines whether the selection is a window or crossing selection.

F

T or F: A negative number can be written in either of the following formats: -2.50 or (2.50).

F

T or F: Dimensional input is available when dynamic input is disabled.

T

T or F: Fractions greater than one require a hyphen between the whole number and the reaction.

T

T or F: In 2D drafting, the origin divides the coordinate system into four quadrants.

T

T or F: In an architectural drawing, AutoCAD treats all entries as inches unless you include the foot (¢) mark.

T

T or F: One way to re-select the last point you entered is to press [Enter] after entering the LINE command.

F

T or F: To use direct distance entry, drag the crosshairs away from the first point and pick a second point.

Dynamic Input

The command access method that is similar to command line input but allows you to keep your focus on the drawing area is _____________________________________.

snap

The feature that constrains the crosshairs to move in specific increments is called...

Grid

The pattern of lines that appears on-screen to help you lay out a drawing in known as the __________________________________.

Point Entry

The process of identifying a point location in the AutoCAD coordinate system is known as ___________________________________.

Selection cycling

The process of selecting a series of stacked objects repeatedly until the desired object is selected is called ______________________________________.

Close

To connect the endpoint of the last line segment to the start point of the first segment, use the ___________________________ option of the LINE command.

Ortho

To draw lines accurately with direct distance entry, you should use direct distance entry in combination with polar tracking or _________________________________ mode.

Pressing the F1 key

To end a command, you cannot use any of the following technique

Upper-right quadrant

When the Origin is at the lower-left corner of the drawing area, which quadrant of the XY place is visible on-screen?

Pick box

When you enter the ERASE command, a _____________________________________ replaces the crosshairs on the screen.

OOPS

Which command can be used to bring back the last object you erased?

REDO

Which command can be used to reverse the action of the UNDO and U commands?

Backspace Key

Which keyboard key can you use to correct an error if you notice the error before you accept the value?

Ortho

Which mode forces all of the lines you draw to be either horizontal or vertical?