elliptical

Patent US2863218 Elliptical arch tool Google Patents from www.google.comIntroduction to Drawing Elliptical ArchesAn elliptical arch is a curved structure consisting of two symmetrical arcs, with the center of the arch being the apex. It is often used in architecture and decoration, as well as in engineering and construction. The shape of the arch is also known as an ellipse. It … [Read more...] about How To Draw An Elliptical Arch