Diagrams: Brooches 1 and 2 from Equilateral Triangles

Brooch 1 From an Equilateral Triangle by Arnold Tubis. Diagrammed by Marc Kirschenbaum and Ian McRobbie. Folded by Jane Rosemarin from paper of her design. See PDF diagrams for Brooch 1. An easy way to cut an equilateral triangle from a square is here: See PDF diagrams for cutting the triangle.

Text by Jane Rosemarin

In July 2022, Arnold Tubis sent The Fold instructions for folding a square to form an accurate heptagon, with only a single cut. He also submitted diagrams for three heptagonal brooches, which we published in two articles ( part 1 and part 2.)

Shortly thereafter, Arnold asked if I would care to publish a series of brooches made from paper shapes with ascending numbers of sides, beginning with the triangle. I happily agreed, and in the coming year, we will be publishing diagrams for brooches made from three- to eight-sided shapes, skipping over the already published heptagons.

Brooch 2 From an Equilateral Triangle by Arnold Tubis. Diagrammed by Marc Kirschenbaum and Ian McRobbie. Folded by Jane Rosemarin. See PDF diagrams for Brooch 2.

In this article are the first two brooches from equilateral triangles and diagrams showing how to make an equilateral triangle from a square, employing a single cut.

I hope you enjoy folding the brooches and that you find the shape-cutting techniques useful when you fold other models.

The triangles are finished differently in this variation of Brooch 2. Paper printed from a CD accompanying the book “V&A Pattern: Kimono.” Folded by Jane Rosemarin.