Letters of ancient Greece, which are frequently used in math
The Greek alphabet has been used to write the Greek language since the late 9th century BC or early 8th century BC. It was derived from the earlier Phoenician alphabet, and was the first alphabetic script to have distinct letters for vowels as well as consonants.
In its classical and modern forms, the alphabet has 24 letters, ordered from alpha to omega.
Greek symbols are used as symbols in mathematics. Every letter of the Greek alphabet except omicron is used in math since it looks just like the Roman letter. All the other lowercase forms and all those uppercase forms that are not identical with the Latin alphabet are used.
Many symbols have traditional uses, such as lower case epsilon (ε) for an arbitrarily small positive number, lower case pi (π) for the ratio of the circumference of a circle to its diameter, capital sigma (Σ) for summation, and lower case sigma (σ) for standard deviation.
When you are working with geometry and trigonometry, you will see a lot of Greek letters. The Greek letters you are most likely to see for angles are α (alpha), β (beta), γ (gamma), δ (delta), and θ (theta). And of course you’ll be using π (pi) all the time.
