Introduction To Engineering Design (IED) EOC Practice Test

Which statement best describes a geometric constraint in CAD?

A geometric constraint bonds two geometric parts together (ie mate, flush). A geometric constraint defines surface color. A geometric constraint sets material properties. A geometric constraint changes temperature.

Correct Answer:

A geometric constraint changes temperature.

Explanation:

Geometric constraints specify relationships between geometric features, controlling how they relate in space rather than describing appearance or material. In CAD assemblies, these constraints—often called mates or flush—bond two parts together to fix their relative position and orientation, making them behave as a single unit. That’s why describing a geometric constraint as bonding two geometric parts best captures what these constraints do. Options about surface color, material properties, or temperature refer to attributes or conditions of the parts, not to how the geometry relates spatially, so they aren’t describing geometric constraints.

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