Construction of a nonagon with compass and marked ruler

 A visual construction of a regular nonagon with compass and marked ruler (neusis construction of a nonagon).

Start with a hexagon and triangle as a base, 

The nonagon

 Connecting the crossing points of nonagons (dot to dot)

Nonagon art

Nonagon art

The nonagon and the square root 3

The nonagon and the square root 3

 

The nonagon and lines of 1 , 2 and square root 3. The circle in red has a radius of square root 3.

Nonagon and square root 3

 

The nonagon and the square root of 3

The nonagon

 THE REGULAR NONAGON

The regular nonagon or 9-gon has 9 lines of equal length arranged around a middle point.

Figure 1:The nonagon

 

Regular polygons: nonagon

 Visual geometry: the regular nonagon

Square root 3 in a nonagon

Nonagon: lines of 1, 2 and square root 3 in a nonagon