![](http://www.alamy.com/thumbs/6/6593E7E2-2B9E-4E54-8BE5-53639BE1F3D8/G2H2PY.jpg)
Pi with circle
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Photo credit: © Miceking / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: 3, 14, computer, digital, education, equation, formula, genius, geometry, graphic, greek, icon, illustration, irrational, isolated, logo, math, mathematical, mathematics, number, pi, pictogram, ratio, school, science, sign, silhouette, studying, symbol, university, vector