تتا

Also known as Θ, θ, theta

Theta (, , uppercase Θ or ϴ; lowercase θ; cursive ϑ; thē̂ta ; Modern: thī́ta ) is the eighth letter of the Greek alphabet, derived from the Phoenician letter Teth 𐤈. In the system of Greek numerals, it has a value of 9.

AI overview

Theta (Θ/θ) is the eighth letter of the Greek alphabet, originally derived from the Phoenician letter Teth. In ancient Greek numerical systems, theta represented the number 9 and remains a foundational character in Greek writing and mathematics.

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