Heptagon Sentence Examples
 heptagon 
- Heptagon has also produced a device that uses a semiconductor laser to project a ' virtual keyboard ' on to a surface. 
- While this design may have been traditional, the shape of the new 50p coin, an equilateral curve heptagon, was revolutionary. 
- The determination of the side of a regular heptagon which can be inscribed or circumscribed to a given circle was reduced to a more complicated equation which was first successfully resolved by Abul Gud. Advertisement