A regular hexagon has all sides lengths equal. It has reflective symmetry about each of its 3 main diagonals, and about lines joining the midpoints of opposite sides. It has rotational symmetry about its centre (one sixth of a turn leaves it unchanged). Each side subtends the same angle to the centre point.

Dimensions of a regular hexagon:

s, the side length
a, the smallest width
A, the largest width
r, the inradius
R, the circumradius

Angles of a regular hexagon:

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