In this paper we investigate angle geometry in the universal Teichmüller space. We construct three examples of triangles bounded by geodesic segments such that the first example has the sum of the ...

Si.427 is the oldest known example of applied geometry, and researchers say it was compiled by a Babylonian land surveyor. Si.427 dates from the Old Babylonian (OB) period from 1900 to 1600 BCE.

The Trisection of the Angle by Plane Geometry: Verified by Trigonometry with Concrete Examples. By Dr. J. Whiteford. Pp. 169.

The question involves work on geometry and it may be necessary to use some angle facts. In this diagram there is a triangle and a straight line. Although the angle looks obtuse , it might not be.

The question involves work on geometry and it may be necessary to use some angle facts. In this diagram there is a triangle and a straight line. Although the angle looks obtuse , it might not be.