Inventor ACU study materials
Inventor ACU study resources

Inventor ACU key terms

Inventor ACU · Get comfortable with the vocabulary.

Ribbon

The horizontal band of tabs and panels at the top of the application window that groups commands by task, such as Sketch, Annotate, and Manage.

Related: Browser, Application Options
Browser

The paneled tree at the left of the window listing every feature, sketch, work plane, and component in the open file, in the order they were created.

Related: Feature, Ribbon
ViewCube

A clickable cube in the graphics area corner used to rotate the model to standard or isometric views and to return to the home orientation.

Related: Navigation Bar, Home View
Navigation Bar

A floating toolbar providing zoom, pan, orbit, and look-at tools so the model can be inspected from any angle without changing the geometry.

Related: ViewCube
Application Options

A dialog of program-wide settings covering file locations, sketching behavior, display appearance, and general preferences that apply to every document you open.

Related: Document Settings
Document Settings

A dialog of settings stored with the current file, such as units, sketch grid spacing, and modeling defaults, which travel with the document.

Related: Application Options, Project File
Project File

A file that defines which folders, libraries, and workspaces are visible to the software, letting teams standardize where parts, assemblies, and drawings are stored and resolved.

Related: Document Settings, Assembly Constraint
Feature

A single modeling operation recorded in the browser, such as an extrusion, hole, fillet, or shell, which can later be edited, reordered, or suppressed.

Related: Browser, Sketch
Sketch

A 2D profile of lines, arcs, and curves drawn on a plane or face that serves as the input geometry for most solid modeling features.

Related: Geometric Constraint, Dimension Constraint
Geometric Constraint

A rule that fixes the relationship between sketch entities, such as horizontal, vertical, parallel, tangent, or coincident, without setting a numeric value.

Related: Dimension Constraint, Fully Constrained Sketch
Dimension Constraint

A driving value placed on sketch geometry, such as a length, radius, or angle, that sets its size and can be edited to change the shape.

Related: Geometric Constraint, Fully Constrained Sketch
Fully Constrained Sketch

A sketch whose entities can no longer be dragged because constraints and dimensions together remove every degree of freedom remaining in the profile.

Related: Geometric Constraint, Dimension Constraint
Construction Geometry

Sketch lines and circles marked as reference-only, which help position real geometry or define axes of symmetry but are ignored when a profile is used.

Related: Sketch, Work Plane
Profile

One or more closed loops of sketch geometry selected to create or cut material, where open loops can also be used for thin-walled results.

Related: Sketch, Extrude
Work Plane

An infinite reference plane that can be created offset from, angled to, or tangent to existing geometry and used to host sketches or define directions.

Related: Work Axis, Sketch
Work Axis

An infinite reference line used to define rotation, alignment, or pattern directions, often created through two points or along an existing cylindrical face.

Related: Work Plane, Pattern
Extrude

A feature that pushes a closed profile along a straight direction, either adding material or removing it, with options for distance, taper, and direction.

Related: Revolve, Profile
Revolve

A feature that sweeps a profile around an axis through a specified angle, producing turned shapes such as shafts, pulleys, and hubs.

Related: Extrude, Work Axis
Sweep

A feature that moves a profile along a chosen path, useful for rails, handles, and tubes, optionally with twist or scaling along the route.

Related: Loft, Profile
Loft

A feature that blends two or more profiles on different planes into a smooth transitional solid, optionally guided by rails or centerlines.

Related: Sweep, Work Plane
Hole Feature

A placed cylindrical cut defined by type, diameter, depth, and termination, which can include countersink, counterbore, or tapped thread specifications.

Related: Pattern, Extrude
Fillet

A rounded transition applied to an edge or corner, defined by a radius that reduces stress concentration and softens sharp geometry.

Related: Chamfer, Shell
Chamfer

A beveled cut applied along an edge, defined by a distance, distance-and-angle, or two distances, often used to break sharp corners.

Related: Fillet
Shell

A feature that hollows a solid by removing one or more selected faces and leaving walls of a specified uniform or varied thickness.

Related: Fillet, Feature
Pattern

A feature that repeats selected geometry in a rectangular, circular, or path-driven arrangement, with control over count, spacing, and direction.

Related: Mirror, Work Axis
Mirror

A feature that copies selected geometry across a plane or face, optionally merging the result with the original body.

Related: Pattern, Work Plane
Parameter

A named value, such as a dimension or angle, that can be referenced in equations so that edits propagate automatically through the model.

Related: Feature, Document Settings
Assembly

A document that brings multiple part and subassembly files together and positions them relative to one another using constraints or joints.

Related: Assembly Constraint, Degrees of Freedom
Component

A single part or subassembly instance placed inside an assembly, listed in the browser and carrying its own position and visibility state.

Related: Assembly, Grounding
Assembly Constraint

A rule that limits how two components can move relative to each other, using mate, flush, angle, tangent, or insert relationships.

Related: Degrees of Freedom, Grounding
Degrees of Freedom

The remaining independent motions a component can still make, such as sliding or rotating, which constraints remove until the part is fixed.

Related: Assembly Constraint, Grounding
Grounding

A setting that locks a component in place so it cannot move, typically applied to the first part placed or to a fixed base in the design.

Related: Degrees of Freedom, Component
Adaptive Part

A part whose geometry can resize based on the assembly context, allowing it to fit mating features that change in the parent assembly.

Related: Component, Assembly Constraint
Interference Check

An analysis tool that reports where solid bodies overlap or occupy the same space, helping catch fit problems before release.

Related: Assembly, Component
Drawing View

A projected, sectioned, detail, or auxiliary representation of a part or assembly placed on a drawing sheet at a chosen scale and orientation.

Related: Base View, Title Block
Base View

The first view placed on a drawing sheet, which establishes the orientation and scale from which projected and child views are derived.

Related: Drawing View, Projected View
Projected View

A view created by projecting geometry from an existing view along a chosen direction, typically placed to the side or below the parent view.

Related: Base View, Drawing View
Bill of Materials

A tabular list of the parts and quantities used in an assembly, often placed on a drawing and linked to balloon callouts on the views.

Related: Drawing View, Title Block
Title Block

A bordered area on a drawing sheet containing identifying information such as part name, drawing number, scale, and revision.

Related: Drawing View, Bill of Materials