# `GSColinearLines`

*Function*

## Declaration

```swift
func GSColinearLines(_ p1: NSPoint, _ mid: NSPoint, _ p2: NSPoint) -> Bool
```

```objc
BOOL GSColinearLines(NSPoint p1, NSPoint mid, NSPoint p2);
```

```python
GSColinearLines(p1: NSPoint, mid: NSPoint, p2: NSPoint) -> bool
```

## See Also

### Miscellaneous Math and Transforms

- [`GSFindDivisorClosestTo`](/Core/GlyphsCore/GSFindDivisorClosestTo)
- [`GSAffineTransformMappingLine2Line`](/Core/GlyphsCore/GSAffineTransformMappingLine2Line)
- [`GSColinearLinesTolerance`](/Core/GlyphsCore/GSColinearLinesTolerance)
- [`GSGreenHarmony`](/Core/GlyphsCore/GSGreenHarmony)