Theorem of Pythagoras
Gr 9

The Grade 9 Theorem of Pythagoras module introduces learners to one of the most important relationships in geometry: the connection between the sides of a right-angled triangle. This chapter explains the theorem clearly, demonstrates how and why it works, and guides students through applying it accurately in different types of problems.

Lessons cover identifying right-angled triangles, understanding the relationship between the hypotenuse and the other two sides, and using the theorem to calculate missing lengths. Learners also explore real-life applications, including distance problems, composite shapes, and practical measurement scenarios. Step-by-step examples help students master the method, avoid common mistakes, and interpret diagrams correctly.

By the end of this module, students will be able to apply the Theorem of Pythagoras confidently, solve geometric problems involving distances, and use these skills as a foundation for trigonometry and advanced geometry in higher grades.