# `GSGlyph isCornerGlyph`

*Instance Method*

Whether the glyph name identifies a corner glyph.

## Declaration

```swift
func isCornerGlyph() -> Bool
```

```objc
- (BOOL) isCornerGlyph;
```

```python
isCornerGlyph() -> bool
```

## Discussion

Corner glyphs provide reusable outlines for corners, caps, brushes, segments, and heads.

## See Also

### Special Glyph Types

- [`GSGlyph isCornerName:`](/Core/GlyphsCore/GSGlyph/isCornerName:) — Whether a glyph name uses a recognized corner-glyph prefix.
- [`GSGlyph isSmartGlyph`](/Core/GlyphsCore/GSGlyph/isSmartGlyph) — Whether the glyph uses Smart Component behavior.
- [`GSGlyph isIcon`](/Core/GlyphsCore/GSGlyph/isIcon) — Whether icon-specific metrics and drawing behavior apply to the glyph.
- [`GSGlyph isSFSymbol`](/Core/GlyphsCore/GSGlyph/isSFSymbol) — Whether the glyph category is SF Symbol.