trigo name try

[Pref. trigo no-, and Gr. metron a measure.] In its primitive and narrower sense the measuring of triangles, or the science of determining the sides and angles of triangles by means of certain parts which are given; but in the modern acceptation of the term it includes all theorems and for mule relative to angles and circular arcs, and the lines connected with them, these lines being expre ed by numbers or ratios. Trigonometry is divided into three branches, Plane, Spherical, and Analytical. Plane trigonometry treats of the relations existing between the sides IMG:content-1444.png:[blocks in formation] *trig-on-y, s . [Pref. tri- , and Gr. gonē =a birth.] Threefold birth or product. "Man... in whom be three distinct souls by way of trigony."- Howell .