Kiselev's geometry books, particularly "Planimetry," are considered comprehensive for a high school geometry curriculum, covering essential topics in solid Euclidean geometry, including lines, planes, polyhedra, and more. The books are well-regarded for their clarity and extensive exercises, having influenced math education in various countries. They are adapted to align with modern US curricula and are suitable for self-study. While some prefer other texts like Moise/Downs' "Geometry," Kiselev's work is praised for its engaging content and thorough explanations, although it lacks construction exercises. Discussions also highlight the comparative value of Kiselev's books against others like Moise's "Elementary Geometry" and Lang's "Geometry," suggesting that Kiselev's should be read first for a solid foundation before tackling more advanced texts.