Geometric shapes provide a timeless look and yet a modern update to any décor, including Christmas decorations. These super simple diy geometric straw prisms are not only fast to make (especially ...

A prism has a constant cross-section throughout its length. When the cross-section is a triangle, the prism is called a triangular prism. When the cross-section is a hexagon, the prism is called a ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This is the ninth in a series of ...

This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the Smithsonian. For more information, visit the Smithsonian's ...

A prism is a solid shape that has the same cross-section all the way through. These three shapes are prisms. The first has a circular cross-section. The second has a rectangular cross-section. The ...