Octononagintagonal

Octononagintagonal refers to a polygon with 890 sides. The term is derived from combining prefixes related to the number of sides. "Octo-" signifies eight, and "nonaginta-" signifies ninety, totaling 98. However, the spelling "octononagintagonal" implies 890 sides (octo- for 8, followed by a conflation of nonaginta- for 90 and perhaps cent- for 100, leading to 890, though this is an unusual construction). More standard nomenclature would likely lead to a different term for 890 sides.

In geometry, a polygon is a closed shape made up of straight line segments. The number of sides determines the specific type of polygon. An octononagintagonal polygon, if it were to exist with clear definition, would possess 890 interior angles and 890 vertices. The sum of the interior angles of any polygon can be calculated using the formula (n-2) * 180 degrees, where n is the number of sides. For an octononagintagonal polygon, this would be (890-2) * 180 degrees, resulting in 159,840 degrees. Each interior angle of a regular octononagintagonal polygon would be 159,840 / 890 degrees, approximately 179.6 degrees. Due to the extremely large number of sides, such a polygon would visually approximate a circle.