\title{\textbf{Geometric Modelling: Perimeter, Area, and Construction of Equations in Composite Shapes (T, L, F, and H Figures)}\
\large GCSE / IGCSE Mathematics Practice Worksheet\
\large Grades 9–11 (Age 13–17) | Exam Boards: Cambridge IGCSE, Edexcel GCSE, AQA, OCR, and Equivalent International Specifications}
This worksheet is a high-quality GCSE / IGCSE Mathematics resource designed for students in Grades 9–11 (ages 13–17) preparing for major international examinations including Cambridge IGCSE, Edexcel GCSE, AQA, OCR, and equivalent boards. It focuses on advanced geometric modelling using composite shapes (T, L, F, and H figures), where learners develop essential exam skills such as breaking complex diagrams into simpler parts, forming algebraic expressions, constructing and solving equations, and applying perimeter and area concepts in structured contexts. The material is suitable for intermediate to higher ability learners (Foundation to Higher Tier transition level) and is ideal for both classroom teaching and independent revision. It is designed to be completed in approximately 60–90 minutes per full set, making it perfect for focused practice sessions, homework assignments, or exam revision drills aimed at strengthening problem-solving accuracy and mathematical reasoning under exam conditions.