Shawl Geometry: Side to Side Triangle

This is the seventh post (out of 16) in a series about different shawl shapes and how to knit them. The introduction post, which lays out the game plan can be found… thisaway.


Side to Side Triangle

Another basic way to create a triangle shaped shawl is by knitting it side to side. The construction for the side-to-side triangular shawl is straightforward and very versatile.

Start by casting on a small number of stitches.
The more stitches you cast on, the less pointy your end will be.
Then, increase one stitch along one edge once every X number of rows. X being any number of rows so long as it is consistent throughout the shawl.


Top to Bottom: Increase every 2nd row. Increase every 4th row. Increase every 6th row.

For example, you could increase once every fourth row, once every sixth row, etc. The less often you increase, the less dramatic the slope, of the side, of your shawl will be, and the shallower your center back will be, in relation to the width across the top of your shawl. Conversely, the more often you increase the sharper the slope will be and the deeper your center back in relation to the width.

Increase steadily until the shawl is half the width you want it to be.
Then, decrease one stitch, along the same edge and at the same rate you increased.
So, if you’ve increased one stitch, every sixth row, along the left side of your work (with the RS facing you), you would decrease one stitch, every sixth row, along the left side of your work (with the RS facing you). This ensures a symmetrical shawl.

Side side Triangle


This type of shawl is great if you want to use absolutely all of a ball of yarn.
Simply weigh your yarn before you start, work your increases until you’ve used half your yarn, then work your decreases.
This type of shawl shaping can also produce shawls that are shallower than the traditional right triangle shawl, and are therefore generally a bit easier to wear.
But remember, how shallow your shawl is all depends on your rate of increases and decreases.

You can also create an asymmetrical side to side triangle, simply by working either half of this symmetrical side-to-side shawl.

In other words, start with a small number of stitches and increase once along one side every X number of rows.
Start with a large number of stitches and decrease once along one side every X number of rows.

Side side Asym Triangle Increase

Side side Asym Triangle Decrease

The books this series spawned:
Shawl Geometry I: the math of shaping shawls for non mathy people
Shawl Geometry II: 16 more shawl shapes to design and play with
Shawl Geometry III: the relationships behind the numbers


The previous post: Winged Triangles
The next post: Squares Edge To Edge

4 Responses

  1. lesliehsimon

    This is great for me Holly………seems so simple when I read it and I’m off to buy your e book…..Leslie

Leave a Reply