Octagon calculations

An octogon is a polygon with seven sides. With this tool you can compute area, radius R of circumscribed circle, side t, apothem r, circumference, d diagonal, height h of regular convex hexagon. You just enter a value so that the other ones are computed. α angle between the sides of a regular octagon is 135° and the ratio between diagonal d and side t is equal to 2.613125929752753. area in m2 radius R in metre m side t in metre m apothem r in metre m diagonal d (2R) in metre m circumference 8t in metre m height h (2r) in metre m Note Copyright © 1997-2025 FXTOP