> 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_matchchildgeometry.md).

# PO\_MatchChildGeometry

This command updates the source geometry from the guide geometry while keeping all other properties.

Notes:

* It changes the aperture or door dimensions of the first selection.
* It does not change the energy and radiance properties of the first selection but just the dimensions and the location of the geometry part.
* The first selection will have the same aperture/door dimensions of the second selection.