<p>Graph theory is an area in discrete mathematics which studies configurations (called graphs) involving a set of vertices interconnected by edges. This book is intended as a general introduction to graph theory.</p><p><br></p><p>The book builds on the verity that graph theory even at high school level is a subject that lends itself well to the development of mathematical reasoning and proof.</p><p><br></p><p>This is an updated edition of two books already published with World Scientific, i.e.,&nbsp;<em>Introduction to Graph Theory: H3 Mathematics</em>&nbsp;'&nbsp;<em>Introduction to Graph Theory: Solutions Manual</em>. The new edition includes solutions and hints to selected problems. This combination allows the book to be used as a textbook for undergraduate students. Professors can select unanswered problems for tutorials while students have solutions for reference.</p>