# I want to union 2D polygons.

**URL:** <https://discourse.vtk.org/t/i-want-to-union-2d-polygons/8912>\
**Category:** Development\
**Created:** [July 9, 2022, 8:47am UTC](https://discourse.vtk.org/t/i-want-to-union-2d-polygons/8912 "2022-07-09T08:47:30Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![ldk7972](https://discourse.vtk.org/letter_avatar_proxy/v4/letter/l/9fc348/32.png) [@ldk7972](https://discourse.vtk.org/u/ldk7972)\
**Post date:** [July 9, 2022, 8:47am UTC](https://discourse.vtk.org/t/i-want-to-union-2d-polygons/8912/1 "2022-07-09T08:47:30Z")

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I want to union 2D polygons.  
What should I do?

first. I want to merge two circles.  
please. help me.