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  1. Octagon - Wikipedia

    In geometry, an octagon (from Ancient Greek ὀκτάγωνον (oktágōnon) 'eight angles') is an eight-sided polygon or 8-gon. A regular octagon has Schläfli symbol {8} [1] and can also be …

  2. Octagon - Definition, Formula, Examples | Octagon Shape

    What is an Octagon? An octagon can be defined as a polygon with eight sides, eight interior angles, and eight vertices. When all the sides and angles of an octagon are equal in …

  3. Octagon Calculator

    If you want to find the area, perimeter, diagonals, circumradius, and inradius of a regular octagon, come in and use the octagon calculator.

  4. Octagon - Math is Fun

    An octagon is an 8-sided polygon (a flat shape with straight sides). First, have a play with an octagon: When all angles are equal and all sides are equal it is regular, otherwise it is …

  5. All About Octagons - Definition, Examples, Formulas | DreamBox

    What has 8 sides and makes a cool shape? Learn all about octagons in this handy guide.

  6. Octagons - polygons with 8 sides - GraphicMaths

    Oct 10, 2022 · Octagons are eight-sided polygons. Learn about their exterior and interior angles, symmetry, and diagonals.

  7. What is an 8-Sided Shape Called? - Vocab Dictionary

    What is an 8-Sided Shape Called? An 8-sided shape is called an octagon. The term ‘octagon’ comes from the Greek words ‘okto’ meaning eight and ‘gonia’ meaning angle. An octagon has …

  8. Octagon - Math.net

    An octagon is a polygon that has eight sides. An octagon is a closed 2D shape that has 8 sides and 8 angles. The shape of an octagon depends on the type of octagon. An irregular octagon …

  9. The Octagon – Definition, Geometry, and Types with Examples

    May 29, 2023 · Throughout history, the Octagon has symbolized harmony and balance, manifested in buildings from the 8th-century Umayyad architectural marvels to modern mixed …

  10. Octagon - GeeksforGeeks

    Jul 23, 2025 · An octagon is an eight-sided, two-dimensional geometric figure with eight interior angles and eight exterior angles. The sum of its exterior angle is 360o and the sum of its …