Use "decagon" in a sentence
1. A polygon with ten sides is a decagon.
2. Three different planar structural modes of 5 approximants have been put forward by using pentagon, decagon, flat hexagon and boat-shape respectively.
1. A polygon with ten sides is a decagon.
2. Three different planar structural modes of 5 approximants have been put forward by using pentagon, decagon, flat hexagon and boat-shape respectively.