A royal road to geometry [electronic resource] : or, an easy and familiar introduction to the mathematics. In Two Parts. I. Practical Geometry, with Applications, and a familiar Introduction; for the use of Mechanics, &c. Also, the Construction of the Ellipsis; with some of its chief Properties demonstrated. II. Elements of Geometry Abridged. Containing the whole Substance of Euclid's first six, the eleventh and twelfth Books; with several other, useful and valuable, Theorems; treated in the most brief, easy, and intelligent manner; for the use of Schools, &c. Being an Attempt to render that most useful and necessary Science more universal, and practically applicable. Interspersed with Notes, critical, explanatory, and instructive. By Thomas Malton. To which is annexed, an Appendix, on the Theory of Mensuration of Superficies and Solids, as deduced from the Elements.