The Normal Elementary Geometry: Embracing A Brief Treatise On Mensuration And Trigonometry is a book written by Edward Brooks and originally published in 1868. The book is a comprehensive guide to elementary geometry, covering topics such as lines, angles, triangles, quadrilaterals, circles, and polygons. It also includes a brief introduction to mensuration and trigonometry. The book is aimed at students and teachers of geometry, providing clear explanations and examples to help them understand the subject. The author, Edward Brooks, was a renowned educator and mathematician who served as the superintendent of schools in Philadelphia. The Normal Elementary Geometry is a valuable resource for anyone interested in learning or teaching geometry.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.