- Regular tetrahedron (Wikipedia)
A regular tetrahedron is a tetrahedron in which all four faces are equilateral triangles. In other words, all of its faces are the same size and shape (congruent) and all edges are the same length. A convex polyhedron in which all of its faces are equilateral triangles is the deltahedron. There are eight convex deltahedra, one of which is the regular tetrahedron.
- Broadway (Seattle) (Wikipedia)
Broadway is a major north–south thoroughfare in Seattle, Washington. The 1.6-mile-long (2.6 km) arterial runs north from Yesler Way at Yesler Terrace through the First Hill and Capitol Hill neighborhoods to East Roy Street. Broadway East (the directional designation changes at East Denny Way) continues north to East Highland Drive. North of there the street is made up of shorter segments: one from just south of East Blaine Street to just north of East Miller Street, another from East Roanoke Street to East Shelby Street, and the last from East Allison Street to Fuhrman Avenue East.
