I call this variant of the rhombicosidodecahedron “greatly augmented” because it was formed by augmenting each pentagonal face of a central rhombicosidodecahedron with a great dodecahedron, while each triangular face is augmented with a great icosahedron. It was made using Stella 4d, which may be found here.
You can tell this is a fashionable tetrahedron because he’s wearing four pyramidal hats — one to cover each vertex.
This bit of polyhedral silliness was created with Stella 4d, software you may try for free right here.
That’s the compound of the dodecahedron and the truncated octahedron above. Shown next is its dual, the compound of the icosahedron and the tetrakis cube. Both compounds were made using Stella 4d: Polyhedron Navigator, which you may try here.
Created using Stella 4d, available here.
Facetings are created by joining vertices to other vertices, but not choosing the vertices in the usual manner, which results in new positions for edges and faces. Faceting is also the reciprocal-function for polyhedral stellation. This is one of many possible facetings of the snub dodecahedron, and I created it using Stella 4d, which you can find here.
This faceting was created using Stella 4d, available here.
News item (http://www.thv11.com/story/life/2015/04/15/slide-the-city/25859617/): giant Slip-‘n’-Slide may be coming to downtown Little Rock, Arkansas. Here’s a photo from the news story.
To reform state government, I think we should have this event come here every time the state legislature is in session, and have it on the capitol grounds, right here in Little Rock. Why? That’s simple: if Arkansas lawmakers spent each session on a Slip-‘n’-Slide, they’d do a lot less harm.
Created with Stella 4d, available here.
This is the first stellation of the second polyhedron seen in the post just before this one, but with the color-scheme changed, on the grounds that I like blue. If you’d like to know more about how this polyhedron was created, I refer you to that post. Stella 4d was used to make these: software you can try right here.
To make this, I used the excavation-function of Stella 4d, set to remove pyramids with equal edge length from each face of an icosidodecahedron. You can try this program here.
The dual of this polyhedron is shown below.
RobertLovesPi.net 