9Th Class Math New Book 2025 Chapter # 9 Exercise # 9.4 PCTB (English & Urdu Medium) Science and Art

📘 9th Class Math | Chapter 9: Exercise 9.4 | PCTB New Book 2025
Welcome back to Knowledge Riser! In this comprehensive lecture, we solve the complete Exercise 9.4 from the New 2025 Math Syllabus (Punjab Curriculum and Textbook Board). This video is designed for both English and Urdu Medium students (Science & Arts groups).

🔍 What You Will Learn:
Geometrical Properties of Polygons: Detailed explanation of regular polygons, interior/exterior angles, and diagonal formulas.
Tessellation (अकलीदी इकाल): Understanding patterns, gaps, and why certain shapes (like triangles and squares) tessellate perfectly.
Step-by-Step Solutions: We solve all questions (1 to 10) including:
Finding the sum of interior angles of a Decagon.
Calculating area and angles of a Parallelogram.
Solving real-world word problems involving wall paint and floor tiles.

📚 Timestamps:
00:00 - Introduction & Polygon Properties 03:32 - Geometrical Properties of Parallelogram 03:55 - What is Tessellation? 06:17 - Exercise 9.4 Q1 (Decagon & Hexagon) 10:30 - Exercise 9.4 Q2 (Area of Parallelogram) 11:46 - Exercise 9.4 Q3 (Angles of Parallelogram) 14:02 - Exercise 9.4 Q4 & Q5 (Tessellation Logic) 18:32 - Exercise 9.4 Q6 (Hexagon Area & Perimeter) 25:31 - Exercise 9.4 Q7 & Q8 (Tile & Paint Problems) 28:30 - Exercise 9.4 Q10 (Trapezoid Window Area)

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Видео 9Th Class Math New Book 2025 Chapter # 9 Exercise # 9.4 PCTB (English & Urdu Medium) Science and Art канала Knowledge Riser