# Angular System **Namespace:** `mp_units::angular` **Module:** `mp_units.systems` **Header:** `` **Secondary Headers:** - `` - `` ## Dimensions | Name | Symbol | |------|:------:| | `dim_angle` | α | ## Quantities | Quantity | Character | Dimension | Kind of | Parent | Equation | Hierarchy | |----------|:---------:|:---------:|:-------:|:------:|----------|:---------:| | `angle` | Real | α | `angular::angle` | — | — | [view](../hierarchies/angle.md) | | `solid_angle` | Real | α² | `angular::solid_angle` | — | `pow<2>(angle)` | [view](../hierarchies/solid_angle.md) | ## Units | Unit Name | Symbol | unit_symbol | Definition | |-----------|:------:|:-----------:|------------| | `degree` | ° (deg) | `deg` | `mag_ratio<1, 360> * revolution` | | `gradian` | ᵍ (grad) | `grad` | `mag_ratio<1, 400> * revolution` | | `radian` | rad | `rad` | kind: `angle` | | `revolution` | rev | `rev` | `mag<2> * π * radian` | | `steradian` | sr | `sr` | `square(radian)` |