# Criss Cross triangulation

**URL:** <https://community.freefem.org/t/criss-cross-triangulation/3254>\
**Category:** General Discussion\
**Created:** [May 18, 2024, 2:51pm UTC](https://community.freefem.org/t/criss-cross-triangulation/3254 "2024-05-18T14:51:45Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![cmd](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/cmd/32/67_2.png) [@cmd](https://community.freefem.org/u/cmd)\
**Post date:** [May 19, 2024, 12:53pm UTC](https://community.freefem.org/t/criss-cross-triangulation/3254/4 "2024-05-19T12:53:02Z")

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Is this what you’re looking for:

> [@Crossed mesh on a square](https://community.freefem.org/t/crossed-mesh-on-a-square/2897):
>
> Hello. I would like to do some calculations on the unit square using crossed meshes. Is there a simple way to create a crossed mesh on a unit square? I would also like to globally refine a mesh such that the old mesh to be a subset of the new mesh. Is that possible to create a uniform crossed mesh by giving the maximum edge of a triangle? I would be grateful for any help!

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