# something strange for 6 nodes triangle element

**URL:** https://discourse.paraview.org/t/something-strange-for-6-nodes-triangle-element/8172
**Category:** ParaView Support
**Tags:** vtk
**Created:** [October 12, 2021, 3:51pm UTC](https://discourse.paraview.org/t/something-strange-for-6-nodes-triangle-element/8172 "2021-10-12T15:51:24Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![peace](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/p/c68b51/32.png) [@peace](https://discourse.paraview.org/u/peace)
#### Post date: [October 12, 2021, 3:51pm UTC](https://discourse.paraview.org/t/something-strange-for-6-nodes-triangle-element/8172/1 "2021-10-12T15:51:24Z")

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Hi everybody,

i write function to write a 6 nodes element in vtk file. But for my result there are 2 elements looks very strange. See

 ![paraview_strange_element](https://discourse.paraview.org/uploads/default/original/2X/f/f6a75071cf4d135fa4fb12187e8e644888715c80.png)

Here is one of the strange elements, i mark it with red line. Upside is surface with edges, below is the points. Did you also meet such strange situation before?