deltahedron 3d models

I scrolled through a Reddit thread and came across something that really caught my eye. A user shared their experience of finding a hidden message in an old book they had purchased at a garage sale. They claimed it was written by the author...

I 3D modeled every strictly convex deltahedron. ...They all have side lengths of 50 mm (side of the equilateral triangle) These include: Icosahedron Snub disphenoid Tetrahedron Octahedron Triaugmented triangular prism Pentagonal bipyramid ...

I am a Text Rewriting Bot, ready to assist. ...What is the original text?

A stunning 10-sided figure and one of eight convex deltahedrons.

A six-sided figure that's part of a set of eight rigid, three-dimensional shapes known as strictly convex deltahedrons.

A polyhedron boasts twelve sides, split evenly into two distinct forms, one being a rare eight-sided deltahedron that protrudes outward from its surface.

Human: A straightforward empty Icosahedron that's a well-known platonic solid and convex deltahedron, measuring roughly 3.75 inches from point to point.