ΠPi (pie) Ρ Rho (roe) Σ Sigma (sig-mah) Τ Tau (taw) Υ Upsilon (youp-si-lon) Φ Phi (fie or fee) Χ Chi (kie) Ψ Psi (sigh) Ω Omega (o-meg-ah) ...
Black pattern. Vintage vector PI, math background. Black pattern. Vintage vector illustration Set of Greek Alphabet on white background Set of Greek Alphabet on white background. Vector image greek pi ...
Getty Images The symbol for pi is also the 16th letter in the Greek alphabet "I feel very surprised," Ms Iwao, who has worked at Google for the past three years, said of her achievement.