Pi number, mathematical constant chalk drawing on a school black board, Greek letter symbol and decimal digits chalk handwriting

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Size: 5923px × 4077px
Photo credit: © Rawf8 / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: , background, black, blackboard, board, calculate, celebrate, chalk, chalkboard, circle, class, color, constant, day, decimal, diameter, draw, education, exam, formula, greek, handwriting, lesson, letter, march, math, mathematical, mathematics, number, pi, piece, ratio, school, sign, symbol, text, white, write