👉 In geometry, a digon (Greek: "diga" meaning "seven and one half" and "gonos" meaning "angle") is an angle that is formed by two straight lines. It has seven angles that are supplementary to each other. The sum of the measures of these angles is 180 degrees. The term "digonous" comes from the Greek word "diga," which means "seven and one half" in English, and "gonos" meaning