Here are two projects showcasing my exploration of Piet Mondrian's geometrical-constructive art, incorporating elements of the golden ratio (ϕ). I employed Mondrian's favored color palette of yellow, red, blue, black, and gray in both projects.

In the first project, I utilized squares that maintain a proportional relationship based on the golden ratio (ϕ). The aim was to visually demonstrate the Pythagorean theorem, drawing inspiration from the ancient Chinese mathematical text, Zhoubi Suanjing (周髀算經), dating back to around 200 B.C.

The side of medium white square / the side of small black square = golden ratio, which is the limit of the ratio of consecutive Fibonacci numbers… 

Below is how the finalized op art work looks like.

The design presents magnificently when displayed on T-shirts and apparels...

In the second project, I employed the renowned Fibonacci spiral. This spiral offers an approximation of the golden spiral through the utilization of quarter-circle arcs placed within squares with sides corresponding to integer Fibonacci numbers (0, 1, 1, 2, 3, 5, 8, 13, 21, 34, and so on).

Again, the design looks great when showcased on T-shirts…

This op art work is available on T-shirts and posters from my online store.