Issue No.04 - April (1986 vol.6)
Dwight Freund , Califomia State University, Sacramento
This note describes a procedure that enables a designer or draftsperson with limited mathematical training to discover interactively the construction of a wide variety of tangency and intersection problems. Requiring very little code to implement, it supplements the standard tangency constructions available on commercial turnkey computer-aided-design systems with a flexibility unavailable even through the inclusion of the numerous special-purpose algorithms available in the literature.
Dwight Freund, "An Interactive Procedure for Constructing Line and Circle Tangencies", IEEE Computer Graphics and Applications, vol.6, no. 4, pp. 59-63, April 1986, doi:10.1109/MCG.1986.276721