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# AdditiveArithmetic Implementations

## Topics

### Operators

[`static func + (Angle2D, Angle2D) -> Angle2D`](/documentation/Spatial/Angle2D/+(_:_:))

Adds two angles and produces their sum.

[`static func += (inout Angle2D, Angle2D)`](/documentation/Spatial/Angle2D/+=(_:_:))

Adds two angles and stores the result in the left-hand-side variable.

[`static func - (Angle2D, Angle2D) -> Angle2D`](/documentation/Spatial/Angle2D/-(_:_:))

Subtracts one angle from another and produces their difference.

[`static func -= (inout Angle2D, Angle2D)`](/documentation/Spatial/Angle2D/-=(_:_:))

Subtracts the second angle from the first and stores the difference in the left-hand-side variable.

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