> For the complete documentation index, see [llms.txt](https://help.prequilt.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.prequilt.com/prequilt-101/build-a-block-unit-for-the-fabric-calculator/triangular-units/quarter-square-triangle-qst.md).

# Quarter Square Triangle (QST)

Best Practices for Auto Recognition

<figure><img src="https://667278489-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FPUFswdysHBJDPIJC9xe0%2Fuploads%2FDXjCMQ3aDsnNyOXQVPYe%2FScreen%20Shot%202024-10-31%20at%205.33.35%20PM.png?alt=media&amp;token=abc63a17-7c7f-4a06-b7aa-f8220d21d332" alt="" width="375"><figcaption><p>Quarter Square Triangle Block Unit</p></figcaption></figure>

## <mark style="color:blue;">Quarter Square Triangle (QST) Block Unit in PreQuilt</mark>

This is another foundation block that will help you create a wide variety of quilt blocks.

But it's important to note that there are 4 different **Quarter Square Triangle (QST)** block units that can be auto recognized in PreQuilt.&#x20;

It's important to make sure that you create your block unit correctly in order for the fabric requirements and cutting instructions to be accurate.

***

## <mark style="color:blue;">Quarter Triangle Block Units in PreQuilt</mark>

<table data-view="cards"><thead><tr><th></th><th data-hidden></th><th data-hidden></th><th data-hidden data-card-cover data-type="files"></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong>Quarter Square Triangle</strong></td><td></td><td></td><td><a href="https://667278489-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FPUFswdysHBJDPIJC9xe0%2Fuploads%2FebImfajVHC3Sghw0oSlO%2FScreen%20Shot%202024-11-11%20at%204.47.34%20PM.png?alt=media&amp;token=b220fbf6-4a34-4c7f-a84e-f50dd3ae447b">Screen Shot 2024-11-11 at 4.47.34 PM.png</a></td><td><a href="/prequilt-101/build-a-block-unit-for-the-fabric-calculator/triangular-units/quarter-square-triangle-qst/qst-4-different-fabrics.md">QST: 4 Different Fabrics</a></td></tr><tr><td><strong>QST:</strong> <strong>Hourglass</strong></td><td></td><td></td><td><a href="https://667278489-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FPUFswdysHBJDPIJC9xe0%2Fuploads%2FVlhG19YEaoWxMU70732M%2FScreen%20Shot%202024-11-11%20at%204.48.24%20PM.png?alt=media&amp;token=8930fcab-570a-4456-b389-7f92651bbb89">Screen Shot 2024-11-11 at 4.48.24 PM.png</a></td><td><a href="/prequilt-101/build-a-block-unit-for-the-fabric-calculator/triangular-units/quarter-square-triangle-qst/qst-hourglass-or-bowtie.md">QST: Hourglass or Bowtie</a></td></tr><tr><td><strong>QST: Hourglass Variation</strong></td><td></td><td></td><td><a href="https://667278489-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FPUFswdysHBJDPIJC9xe0%2Fuploads%2FqXC9vRIuQ4Eod0MaPWSz%2FScreen%20Shot%202024-11-11%20at%204.49.03%20PM.png?alt=media&amp;token=c51da7bc-32e0-4ec0-aec3-ec7ac3c77408">Screen Shot 2024-11-11 at 4.49.03 PM.png</a></td><td><a href="broken://pages/nuCmhnu1khue6ZN7MIqH">Broken link</a></td></tr><tr><td><strong>Split QST</strong></td><td></td><td></td><td><a href="https://667278489-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FPUFswdysHBJDPIJC9xe0%2Fuploads%2FpQuKdRi1iHRHHNBLxna4%2FScreen%20Shot%202024-11-11%20at%204.50.30%20PM.png?alt=media&amp;token=326614ce-382c-4736-9ad5-60867acb9ae0">Screen Shot 2024-11-11 at 4.50.30 PM.png</a></td><td><a href="/prequilt-101/build-a-block-unit-for-the-fabric-calculator/triangular-units/quarter-square-triangle-qst/split-qst.md">Split QST</a></td></tr></tbody></table>