# Select All by Trait

## Non-Manifold

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Selects the Non-manifold geometry of a mesh. This entry is available when editing a mesh, in Vertex and Edge selection modes only.

- Extend
Lets you extend the current selection.

- Wire
Selects all the edges that do not belong to any face.

- Boundaries
Selects edges in boundaries and holes.

- Multiple Faces
Selects edges that belong to three or more faces.

- Non Contiguous
Selects edges that belong to exactly two faces with opposite normals.

- Vertices
Selects vertices that belong to

*wire*and*multiple face*edges, isolated vertices, and vertices that belong to non-adjoining faces.

## Loose Geometry

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This selection depends on the currently selected Selection Modes; In vertex and edge selection mode it selects all vertices or edges that do not form part of a face. In face selection mode it selects all faces that do not share edges with other faces.

## Interior Faces

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Selects faces where all edges have more than two faces.

## Faces by Sides

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Selects all faces that have a specified number of edges.

## Ungrouped Vertices

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Selects all vertices which are not part of a vertex group.