Get NCERT Solutions to all exercise questions and examples of Chapter 5 Class 9 Introduction to Euclid's Geometry. All questions have been solved in an easy to understand way.

Euclid was a mathematician from Egypt who studied and explained geometry. In this chapter, we will learn Euclid's Geometry. Euclid's Geometry is a bit different from the geometry we study today. We will learn how Euclid explained Geometry and try to relate it with the geometry we study today.

In this chapter, we will study

**Euclid's definitions**of Point, Line, Surface- In these definitions, some terms cannot be explained. So we assume it to be true. These terms are called
**Axioms.** - Axioms are things which are universally true. We then study some of
**Euclid's Axioms.** **Postulates**are things which are universally true in geometry.- We study
**Euclid's 5 postulates**, and also Axiom 5.1 which is a result of Postulate 1 - Using Axioms and Postulates, we prove Theorems.
**Theorems**can always be proved. - Then, we prove
**Theorem 5.1**- Two distinct lines cannot have more than one point in common. - We also
**different versions of Postulate 5**, and also rewrite it in our own way.

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