Infinite Series: Golden Ratio "Phi" Math Geometry Poster [Blue]
This poster includes "phi", also known as the golden ratio number represented as an infinite sum together with a geometrical representation. It's believed that the Golden Ratio has been in use for at least 4,000 years in human art and design. However, it may be even longer than that – some people argue that the Ancient Egyptians used the principle to build the pyramids.
This poster is printed on waterproof tear resistant material, using high definition UV inks, for indoor or outdoor use. All produced and designed by Buttered Kat. Proudly Made in the USA. Watermark not shown on actual design.