NCERT Solutions for Class 9 Maths Chapter 5 Introduction to Euclid Geometry Ex 5.1 helps you understand the concepts given in the chapter. All our solutions are prepared according to the new patterned NCERT Book and syllabus. This exercise explains some of Euclid’s postulates and axioms. Postulate 1 states that “A straight line may be drawn from any one point to any other point.” Axiom 1 says “Given two distinct points, there is a unique line that passes through them.” Solving class 9 maths NCERT solutions exercise 5.1 will help you to understand the chapter conceptually and ultimately help you to ascend marks in the exams.