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Delta (letter) - Wikipedia
Delta Symbol in Greek Alphabet Δ δ
δ - Wiktionary, the free dictionary
Greek alphabet letters & symbols with pronunciation - RapidTables.com
Delta Symbol - Δ δ - PiliApp
Delta - Simple English Wikipedia, the free encyclopedia
The Difference Between 𝑑, 𝛿, Δ and ∂ in Physics and Mathematics
Delta Symbol and its Meaning in Maths, Lowercase Delta - Toppr
Alt Codes for Letters of the Greek Alphabet - AltCodeUnicode.com
Greek Delta Symbol And Its Meaning, The Fourth Letter Of The Greek Alphabet