- Bald Eagle Wildlife Area Unit (wdfw.wa.gov)
The Bald Eagle Unit is accessible ONLY by boat. It consists of 603 acres of undisturbed mature forested habitat that occurs in several parcels along the south bank of the Skagit River and the east and west banks of the Sauk River (confluence of the two rivers). The unit was acquired by the Department of Game in 1975-76 with the assistance of The Nature Conservancy for the conservation and protection of bald eagle winter habitat and roost sites.
- Archimedean solid (Wikipedia)
In geometry, an Archimedean solid is one of 13 convex polyhedra whose faces are regular polygons and whose vertices are all symmetric to each other. They were first enumerated by Archimedes. They belong to the class of convex uniform polyhedra, the convex polyhedra with regular faces and symmetric vertices, which is divided into the Archimedean solids, the five Platonic solids (each with only one type of polygon face), and the two infinite families of prisms and antiprisms. The pseudorhombicuboctahedron is an extra polyhedron with regular faces and congruent vertices, but it is not generally counted as an Archimedean solid because it is not vertex-transitive. An even larger class than the convex uniform polyhedra is the Johnson solids, whose regular polygonal faces do not need to meet in identical vertices.