Posamentier, Alfred S., <br/><br/>
The secrets of triangles :  a mathematical journey / 
Alfred S. Posamentier and Ingmar Lehmann. 
 - 387 pages :  illustrations ;  24 cm 
<br/><br/>Includes bibliographical references and index. 
<br/><br/>Introduction to the triangle -- Concurrencies of a triangle -- Noteworthy points in a triangle -- Concurrent circles of a triangle -- Special lines of a triangle -- Useful triangle theorems -- Areas of and within triangles -- Triangle constructions -- Inequalities in a triangle -- Triangles and fractals. 
<br/><br/><label>ISBN: </label>1616145870 9781616145873 
<br/><br/><label>LCCN: </label>2012013635 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry.<br/>Triangle
<br/><br/><label>LC Class. No.: </label>QA531  / .P67 2012 
<br/><br/><label>Dewey Class. No.: </label>516.154