> For the complete documentation index, see [llms.txt](https://docs.openbrim.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.openbrim.org/templates/cadd/dimensionangular-cadd.md).

# Angular Dimension

An **Angular Dimension** measures and labels the angle between two lines, two rays, or three points. In bridge drawings you'll use it for skew angles at piers and abutments, turning angles at intersection bridges, beam orientation angles, and any angular relationship that needs to be called out.

Pick two lines (or three points defining two rays from a common vertex), and the dimension shows the angle between them.

## Text and units

**Label:** Override text. Leave blank to use the auto-computed angle.

**Prefix:** Text before the value.

**Suffix:** Text after the value. Default `°`.

**Precision:** Number of decimal places. 0 for whole degrees (typical for skew angles), 1–2 for finer angles.

## Placement

**Offset X / Offset Y:** Position the arc's distance from the vertex. Larger offset draws the arc farther out from the vertex (useful when the angle is in a tight corner with other geometry nearby).

## Typography

**Text Height:** Text size in real units.

**Font Family / Font Weight / Font Style:** Font controls (default sans-serif, normal weight, normal style).

## Notes

For skew dimensions on pier outlines, the angle is typically called out as the angle from a perpendicular reference (the alignment normal) — pick the alignment direction and the pier face direction as the two rays.

For very small angles (under \~3°), the rendered arc can be tiny and hard to read; either increase Offset to push the arc out where the curvature shows, or call the angle out as a slope dimension instead.


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