Construction Of An Octagon

| View Cart ⇗ | Info

An illustration showing how to construct an octagon on a given line. “Prolong AB to C. With B as center and AB as radius, draw the circle AFDEC; from B, draw BI at right angles to AB; divide the angles ABC and DBC each into two equal parts; then BD is one side of the octagon. With A and E as centers, draw the arcs HKE and AKI, which determine the points H and I, and thus complete the octagon as shown in the illustration.”

Source

Albert A. Hopkins Scientific America: Handy Book Of Facts And Formulas (New York: Munn & Co., Inc., 1918) 37

Downloads

TIFF (full resolution)

2400×2036, 349.4 KiB

Large GIF

1024×868, 49.2 KiB

Medium GIF

640×542, 28.2 KiB

Small GIF

320×271, 12.3 KiB