Explore Books on
middle point

A treatise on spherical trigonometry, by W.J. M'Clelland and T. Preston

By William John M 'Clelland,Thomas Preston

An Elementary Treatise on Plane Trigonometry

By Ernest William Hobson ,C.M. (Charles Minshall) Jessop

A Rudimentary Treatise on the Principles of Construction in the Carpentry and Joinery of Roofs

By John Robison