Textbook. — Edited by . In. A. Gardening . - M. : Education, 2010. — 127 s. : il. — ISBN 978-5-09-018009-2 . The textbook corresponds to the Mandatory Minimum of the content of education and the federal components of the State Standard of General Education in Mathematics . The presentation of the material in the textbook is well combined with the traditions of geometry and meets the requirements of the modern school. The textbook contains 3 chapters devoted to the study of planimetry . A large number of colorful illustrations provides visibility of the material and contributes to better assimilation of the material. The textbook contains a rich problem material. For the convenience of teachers and students, tasks are divided into rubrics. In addition to mandatory tasks, the textbook contains additional tasks, as well as tasks of increased difficulty. Additional material and repetition questions will help students better prepare for classes and expand their knowledge of geometry. In addition, the textbook is distinguished by the sequence of presentation of the material, as well as interesting, constructive proofs of theorems .. Initial Geometric Data. Triangles. Circumference.