Decahedron
/ˌdekəˈhiːdrən/
Definition 1 of 1
Pro Tip 1/3Geometry Term
A decahedron is often discussed in geometry classes and mathematical contexts. 
In our geometry lesson, we learned the properties of a decahedron.
Pro Tip 2/33D Object
Remember, a decahedron is a three-dimensional figure, not just a flat shape. 
The decahedron can be rotated to see all its ten faces.
Pro Tip 3/3Regular vs. Irregular
Decahedrons can be regular (all faces are the same) or irregular. 
She made an irregular decahedron with different polygonal faces.