AutoCAD Modules 21 - 41 (Reviewer)

Vertex

A ______ is the endpoint of each line or arc segment of a polyline.

After defining a block, you can insert it into a drawing as many times as you wish. It can also be inserted into other drawings or shared with others. Regardless of the number of times the block has been inserted into the drawing, it will not significantly change the size of the drawings database.

A block is a collection of objects that acts as one object.

Therefore, it is important to be able to verify if a polyline is opened or closed.

A closed polyline creates a polygon. A closed polyline or a polygon has many different uses in an AutoCAD drawing but will appear exactly the same as an open polyline.

An exploded dimension is simply a collection of AutoCAD objects indicating a measurement on the object and has no relation to the object it is dimensioning.

Associative and non-associative dimensions are dimensions that are intelligent, similar to an associative hatch pattern and are tied to the object they are dimensioning.

The drawing can then be plotted and used for construction or reference. Up to this point in the modules, you have only been adding shape description to the object you are drawing by describing the size and location.

Dimensioning is the process of adding size descriptions to the object you have drawn.

Model space is a limitless three dimensional space where the real object(s) of your model are drawn.

For example, if you are drawing a house, everything that is part of the house such as the walls, windows, doors, etc. are drawn in model space.

DesignCenter organizes access to drawings, blocks, hatches and other drawing content.

From DesignCenter, you can insert, copy or drag and drop objects from an open drawing, filed drawings, a network or even the internet to your current drawing.

Block object

If a block has another block as one of its objects, what is the internal block called?

Objects only have to be drawn once in AutoCAD, and then they can be used over and over. Their size and orientation are not important, as they can easily be changed as you will see in future modules.

If you have to draw an object that is similar to one you or someone else has drawn before, simply make a copy of it and make your changes.

The array will be in the counterclockwise direction.

In a polar array, what does a positive value mean in the Angle to Fill?

That the rows in the array are added to the right.

In a rectangular array, what does a row offset with a positive value mean?

Paper space is a virtual two-dimensional space where all objects related to the piece of paper you are plotting your drawing on, are drawn.

Objects drawn in paper space are things like the titleblock, borders, dimensions, notes, labels and bills of material. Paper space is also drawn at full size but the units are usually inches or millimeters.

The current layer

On what layer are the Definition Points inserted on?

On the same layer as the objects that were selected in the COPY, ARRAY or MIRROR commands.

On what layer will the object(s) that are copied, arrayed, or mirrored, using the COPY, ARRAY and MIRROR commands, reside on?

This command is used to remove unwanted block definitions, dimension styles, layers, linetypes, mline styles, plot styles, shapes and text styles.

PU (Purge)

DIMLIN (DimLinear)

The DIMLINEAR command is used to insert a linear dimension. A linear dimension is a dimension that is either horizontal or vertical.

REN (Rename)

The RENAME command is used to rename block definitions, dimension styles, layers, linetypes, text styles, UCS's, viewports and views.

Definition points are points that are automatically inserted on the drawing by dimensioning commands.

They are only inserted for associative and non-associative dimensions. One definition point is inserted for each end of an extension line or on opposite sides of a circle or arc.

The Scale for Dimension Features area on the Fit tab allows you to select the scale factor you want applied to the dimensioning features when a dimension is inserted.

This can be a very useful item and will save you time.

QLEADER

This command is used to a leader dimension.

BR (Break)

This command is used to break a piece out of or off an object. It can also be used to break an object into two pieces.

REC (Rectangle)

This command is used to construct a 4 sided polygon using a closed polyline in the shape of a rectangle or a square.

EL (Ellipse)

This command is used to construct ellipses or elliptical arcs.

X (Explode)

This command is used to convert polylines plus many other AutoCAD objects back into individual objects.

SOLDRAW

This command is used to convert views created by the SOLVIEW command by projecting the 3D objects onto a 2D plane and changing hidden objects onto the hidden layer.

CTRL+C (CopyClip)

This command is used to copy an object(s) from the drawing onto the clipboard.

CTRL+SHIFT+C (CopyBase)

This command is used to copy an object(s) onto the clipboard with a known basepoint.

B (Block)

This command is used to create a block definition in the active drawing.

BO (Boundary)

This command is used to create a closed polyline using existing objects that form an enclosed area on the drawing.

PL / PLINE (Polyline)

This command is used to create a connected sequence of line and/or arc segments to form a single AutoCAD object.

SOLPROF

This command is used to create a profile of edges of straight and curved surfaces of a solid model as it is viewed from a selected viewpoint.

POL (Polygon)

This command is used to create closed regular polylines to form polygons that have between 3 to 1024 sides.

DO (Donut)

This command is used to create donuts.

AR (Array)

This command is used to create multiple copies of objects in a polar or rectangular pattern.

DDIM (DimStyle)

This command is used to create or modify dimensioning styles.

SOLVIEW

This command is used to create views and the necessary layers of a solid 3D model.

LAYOUT

This command is used to create, modify, or edit the current layout.

TIME

This command is used to display and track the amount of time the active drawing is activated.

REFEDIT

This command is used to edit a reference file or a block in the current drawing.

PE (PEdit)

This command is used to edit existing or create new polylines.

DIMDIA (DimDiameter)

This command is used to insert a diameter dimension.

DIMRAD (DimRadius)

This command is used to insert a radius dimension.

DIMALI (DimAligned)

This command is used to insert an aligned dimension.

DIMANG (DimAngular)

This command is used to insert an angular dimension.

INSERT

This command is used to insert blocks into the drawing.

DIMCENTER

This command is used to insert center lines or center marks on circles or arcs.

BH (BHatch)

This command is used to insert hatch patterns.

MT (MText)

This command is used to insert one or more lines of text on a drawing. It is a single AutoCAD object.

CO / CP (Copy)

This command is used to make a copy of an object(s) on the current drawing.

ARRAYCLASSIC

This command is used to make multiple copies of objects either in a rectangular or a polar pattern.

XREF / XR (XRef)

This command is used to manage reference files in the current drawing.

M (Move)

This command is used to move an object(s) from one location to another on the current drawing.

ADC / CTRL+2 (ADCenter)

This command is used to open the DesignCenter dialogue box.

CTRL+V (PasteClip)

This command is used to paste an object(s) from the clipboard onto the drawing.

FILL

This command is used to toggle the solid fill display inside polylines, solid and hatches.

When an object is copied, the copies retain all of the properties of the original object even the layer it resides on.

This happens regardless of the current layer when the COPY command is executed.

When an object is arrayed, all objects created in the array will retain the properties of the original object, even the layer the original object resides on.

This happens regardless of the current layer when the ARRAY command is executed.

The Measurement Scale box allows you to set the scale you want applied to the object measurements when inserting dimensions.

This is a very important setting and in most cases should be left at 1.

DIMASSOC

This system variable is used to enable either associative, non-associative or exploded dimensions being inserted by dimensioning commands.

DIMASO

This system variable is used to enable either non-associative or exploded dimensions being inserted dimensioning commands.

Polylines can be drawn from scratch, using the PLINE command, or they can be created from existing objects using the PEDIT or the BOUNDARY command.

To edit a polyline, use the PEDIT command or the Properties dialogue box.

In AutoCAD, a regular polygon is a closed polyline having between 3 and 1,024 equal-length sides and is drawn using the POLYGON command.

Using the POLYGON command to create polygons is a fast and simple way to draw squares, equilateral triangles, hexagons, octagons, and any other regular polygon.

3 and 1024

What are the minimum and maximum number of sides of a polygon that can be drawn with the POLYGON command?

Lines and Ellipses

What are the only two types of objects that can be used to create a polyline when using the PEDIT command?

LIMITS

What command controls the size of the rectangular or square shape that is filled with grid points when the grid display is enabled?

UNITS

What command controls the way units are displayed in the LIST and PROPERTIES commands?

STYLE

What command is used to change the font of an existing text object on the drawing?

REN (Rename)

What command is used to change the name of a block definition in the current drawing?

EXPLODE

What command is used to convert a polyline back to its original objects?

COPYBASE

What command is used to copy objects from one drawing to another and locate the objects in the exact location they were in the drawing being copied from?

RECTANGLE

What command is used to draw a square as a closed polygon?

BLOCK

What command is used to establish the insert point for a block?

AREA

What command is used to find the perimeter of a closed polyline?

REMOVE / PURGE

What command is used to totally remove a block definition from the current drawing?

CTRL+V

What command will paste the contents of the clipboard onto the drawing?

Detach it using the XREF command.

What do you have to do to completely remove a reference file from the current drawing?

The height you use the most.

What is the best size to set the text height to when setting it for a named text style?

DIVIDE inserts points in an equal number of divisions while MEASURE inserts points at an equal distance entered by the user.

What is the main difference between the DIVIDE and MEASURE commands?

End

What is the name of the object snap mode for a point?

Individual pick

What object selection method must be used in the STRETCH command?

NEAREST

What snap mode is used to snap to a point located on an object that is the closest to the current location of the cursor?

BASEHATCH

What system variable controls the origin of a hatching pattern?

FILL and REGEN

What two commands are used to toggle the display on or off of the solid fill in a donut?

FILL and REGEN

What two commands are used to toggle the hatching pattern display on or off in a drawing?

[ ]

When AutoCAD finds the dimension or measures the object in a dimensioning command, it does not display the actual number. What characters does it display to represent the default measurement?

The fastest way to dimension an object is to dimension it very quickly inserting all the dimensions required.

When all the dimensions are in, change them using the Properties window and the STRETCH command. Don't try to fix the dimensions as you insert them.

Definition Points

When associative and non-associative dimensions are inserted, they insert points at the dimensions location. What are these points called?

The COPYBASE command is very important to the AutoCAD operators who work in disciplines such as mapping.

When copying objects from one drawing to another and the objects must be in the exact location as the original drawing, use the COPYBASE command with 0,0 as the base point. Use the same coordinates when pasting it into the new drawing.

It restricts the graphic cursor to the horizontal and vertical axis.

When enabled, what does the ortho mode do in AutoCAD?

Plines

When the command XREF is used to bind an xref into the drawing, what object type(s) is the xref converted into?

Block database table

Where are block definitions stored in a drawing's database?

F7

Which function key toggles the grid display?

F8

Which function key toggles the ortho mode?

F9

Which function key toggles the snap mode?

D) All the objects selected by the user since the drawing was opened.

Which one of the following best describes a selection set? A) The last set of objects selected in any command that uses the select object prompt. B) All the objects in the drawing. C) All the objects on layer zero. D) All the objects selected by the user since the drawing was opened. E) All the objects that are currently visible in the drawing.

Associative dimensions are inserted as individual objects.

Which one of the following best describes one difference between an associative and an exploded dimension?

E) It can only shorten or lengthen lines.

Which one of the following best describes the STRETCH command? A) It moves the objects that cross the crossing window and stretches the objects that are totally inside the crossing window. B) It can only stretch an object or objects larger. C) It can only stretch an object or objects smaller. D) It stretches the objects that cross the crossing window and moves the objects that are totally inside the crossing window. E) It can only shorten or lengthen lines.

D) Selects all the objects that are totally inside a window defined by a polygon.

Which one of the following best describes the window polygon method of selecting objects? A) Selects all the objects that are totally inside and the ones that cross a window defined by a polygon. B) Selects all the objects that are crossed by a line or a series of lines. C) Selects all the objects that totally inside and the ones that cross a square or rectangular window defined by two diagonal corners. D) Selects all the objects that are totally inside a window defined by a polygon. E) Selects all the objects are totally outside a window defined by a polygon.

CTRL+C

Which one of the following will copy the selected object(s) onto the clipboard.

A dimensioning style is similar to a text style. A dimensioning style controls the way your dimensions appear in your drawing.

You can create new styles or edit existing dimensioning styles with the DIMSTYLE command. AutoCAD uses the current dimensioning style properties when inserting dimensions with any dimensioning command.