This book provides solutions to the problems contained in a treatise on plane coordinate geometry, making it an essential resource for students and teachers of mathematics. The author covers a wide range of topics, from lines and angles to circles, conic sections, and transformations. With clear explanations and step-by-step solutions, this book is perfect for anyone looking to improve their understanding of coordinate geometry. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.