Coloring page : Collection of triangles and rectangle
![Collection of triangles with straight lines: a very soothing coloring page Collection of triangles with straight lines: a very soothing coloring page](https://www.justcolor.net/wp-content/uploads/sites/1/nggallery/anti-stress/coloring-adult-triangles-traits.jpg)
Collection of triangles with straight lines: a very soothing coloring page
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