> For the complete documentation index, see [llms.txt](https://docs.pollination.solutions/user-manual/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pollination.solutions/user-manual/rhino-plugin/pollination-commands/alphabetically/po_check2dortho.md).

# PO\_Check2DOrtho

Analysis 2D plans (curves) and visualize non-orthogonal geometries based on a reference plane.

## Options

* **Custom Plane**

  Set a custom plane by two points (X axis). Default is a World XY plane.
* **Angle Tolerance**

  A degree number from 0 to 360 used for non-orthogonal checks. A perfect orthogonal geometry means 90 degree from a base axis when angle tolerance is set to 0. Increase the angle tolerance would consider lines orthogonal within a range of 90 +- the angle tolerance. Default 0.01.

Notes:

* The results are non-orthogonal lines.