Constructing a hexagon with one dimension
To construct a hex on a polar grid with one
Polar Grid: (Sketcher Mode)
Grid Snap - on/off
Polar - Section Tools - Polar
Section Environment - Grid - Type- Polar (Spider Web)
To construct the hexagon:
Use the polar grid - snap on.
Add two (2) constructive tangent circles to the flats and to the points.
Dimension only the one circle. The hex is made.