Hexagon
A hexagon is a 6-sided polygon (a flat shape with straight sides).
Regular or Irregular
If all angles are equal and all sides are equal, then it is regular, otherwise it is irregular:
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| Regular Hexagon | Irregular Hexagons |
Concave or Convex
A convex hexagon has no angles pointing inwards. More precisely, no internal angles can be more than 180°.
If there are any internal angles greater than 180° then it is concave. (Think: concave has a "cave" in it)
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| Convex Hexagon | Concave Hexagon |
Is it a Hexagon?
The shape must also be closed (all the lines connect up):
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| Hexagon (straight sides) |
Not a Hexagon (has a curve) |
Not a Hexagon (open, not closed) |
Properties
A regular hexagon has:
- Interior Angles of 120°
- Exterior Angles of 60°
- Area = (1.5√3) × s2 , or approximately 2.5980762 × s2 (where s=side length)