Harry Wheeler, Equilateral Triangle Transformable into Square, Plane Dissection National Museum of American History Geometric Model by A. Harry Wheeler, Equilateral Triangle Transformable into Square, ...

The ancient Greek mathematician Euclid proved in his Elements of Geometry that there are only five Platonic solids – the regular tetrahedron (four sides that are equilateral triangles), the cube (six ...

The Lange 1 put the Swiss watch industry on notice in 1994. This is the complete history of the most famous watch from ...

225 + 135 = 360 The sum of interior angles in a triangle is 180˚. In an equilateral triangle, all three angles are equal to 60˚. To find the missing angles in an equilateral triangle ...

Where would carbon-based life be without carbon? There are 118 known chemical elements, but carbon is the fourth most ...

Smith's "Venus Equilateral" stories (1942-45) featured an inhabited communications satellite. In effect, science-fiction writers critically examined the concept of space stations and concluded ...

The island of Aegina is one of the most popular Greek spots thanks to its proximity to Athens, but few know that for a short ...

A. Lange & Söhne's Lange 1 is a modern classic dating back to the relaunch of the brand in 1994. Here are the best examples ...

Trihexaflexagon is constructed by cutting a strip of paper so that it may be marked off in 10 equilateral triangles (A). The strip is folded backward along the line ab and turned over (B).

Designed in 1950, the 1,900-square-foot house is considered to be an “excellent” example of Usonian architecture, which was ...

You should also place the left and right speakers at ear level, and they should form an equilateral triangle. Avoid putting your front speakers inside your entertainment center or bookshelves; while ...