This series is designed to support students preparing for senior high school entrance examinations. It systematically presents key concepts, axioms, theorems, corollaries, and problems in geometry, based primarily on middle school content while extending to more challenging exam-oriented applications.The book emphasizes visual learning and deep understanding. Most problems are presented through geometric figures, with brief explanations provided only when necessary. Readers are encouraged to interpret the figures independently to strengthen geometric intuition and problem-solving skills. To use this book effectively:Study the section "Figure Explanations" carefully.;Attempt to understand selected figures independently.;Refer to "Questions and Brief Solutions" to verify understanding.;Build mastery through repeated practice with a range of figures.;The level of difficulty is comparable to the more challenging problems in standard textbooks and typical senior high school entrance examination questions.