We can’t help but notice the current preoccupation with the triangle in the design world. Spotted at various trade shows and events throughout this year, it was lighting designs in particular that celebrated this simple yet striking geometric shape.

Inspired by the early abstract work of American painter Frank Stella, the Stella Triangle wall sconce is Brooklyn-based Rosie Li‘s debut design for New York lighting brand Roll & Hill. When illuminated, a series of glowing nested triangles are revealed within the lamp’s half mirrored glass diffuser.

A collaboration between furniture designer Katie Stout and ceramics artist Sean Gerstley, the textured surface of the Green Triangle Lamp is handmade from ceramic. The design is currently on show at Johnson Trading Gallery and can be bought online through L’Arco Baleno.

The Corner Light by Peter Bristol for Established & Sons fits neatly into the corner of a room, creating an equilateral triangle of light. The lamp is held in place with a simple steel bracket that mounts to the wall and an aluminium frame, while the fabric diffuser magnetically attaches to the frame.

Berlin-based designer Joa Herrenknecht‘s geometrical KOGI lamps are made from triangles of Tyvek, a synthetic material made of high-density polyethylene fibers. Colored versions are also available.

Strung between two walls on super-fine black cables, the cone-shaped String Lights by Michael Anastassiades for Flos were one of the most memorable lighting pieces presented earlier this year at Euroluce during the Salone Internazionale del Mobile in Milan.