A study says a triangle between the Vitruvian Man’s feet reveals a 1.64 ratio, also found in Bonwill’s jaw model and natural crystal structures. Published in the Journal of Mathematics and the Arts.

The triangle is a small instrument made of a metal rod bent into a triangle shape that is open at one corner. While small, its sound is distinct, with multiple overtones and nonharmonic resonance.

The complete kits cost $199 for the full-size triangles and $119 for the minitriangles. Expansion packs are $59 and $119, respectively. Nanoleaf’s new Hexagon Shapes are a surprisingly lively ...

Three colors (i.e., blue, yellow, and red) and shapes (i.e., square, triangle, and circle) generated nine color-shape combinations, with the three shapes displayed as black-line sketches.

Geometric shapes—circles, triangles, and squares—are omnipresent in the series, and their significance goes far beyond aesthetics. Shapes from a traditional Korean game The circles, ...