Regular Octagon -- from Wolfram MathWorld

Hexagon -- from Wolfram MathWorld Hexagon, Regular polygon, Plane geometry

How to Find the Area of Regular Polygons: 7 Steps (with Pictures)

Polygon -- from Wolfram MathWorld

A prism with an altitude of 15cm has a base in the form of regular octagon inscribed in a square 10cm x 10 cm. What is the volume of the prism? - Quora

PDF) Egyptian Mathematics Disclosure

Generalized Octagon -- from Wolfram MathWorld

Polygon -- from Wolfram MathWorld

A regular octagon with vertex angles π/4 can be realized in the tiling

Generalized Polygon -- from Wolfram MathWorld

ReuleauxPolygon Wolfram Function Repository

A prism with an altitude of 15cm has a base in the form of regular octagon inscribed in a square 10cm x 10 cm. What is the volume of the prism? - Quora

Golden Gnomon Learning math, Learning tools, Education math

Regular Hexagon -- from Wolfram MathWorld