Inventional Geometry is a book written by William George Spencer in 1876, aimed at familiarizing students with geometrical concepts and exercising their inventive faculties. The book is a series of problems that challenge students to use their imagination and creativity to solve geometric puzzles. The problems are designed to enhance the student's understanding of geometry and to develop their ability to think logically and creatively. The book covers a wide range of topics, including points, lines, angles, triangles, circles, and polygons. It also includes exercises on the properties of geometric figures and the relationships between them. Inventional Geometry is an essential resource for students of all levels who want to improve their understanding of geometry and develop their problem-solving skills.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.