NCERT Solutions Class 9 Maths Chapter 5 Introduction to Euclid’s Geometry Exercise 5.1 are provided here. These solutions are prepared by expert teachers to guide you in your exam preparation. The solutions are always prepared by following NCERT guidelines, so that it covers the whole syllabus accordingly. Our CBSE Class 9 Maths Solutions Chapter 5 Exercise 5.1 Solutions are very helpful in scoring well in examinations.

## NCERT Solutions for Class 9 Maths Chapter 5 Introduction to Euclid’s Geometry Ex 5.2

**EXERCISE 5.2**

**Question 1:** How would you rewrite Euclid’s fifth postulate so that it would be easier to understand?

**Answer:** When two lines are cut by a third line, such that the sum of interior angles is less than 180° on one side then the first two lines intersect on the same side.

**Question 2:** Does Euclid’s fifth postulate imply the existence of parallel lines? Explain.

**Answer:** It may be argued that Euclid’s fifth postulate recognises the existence of parallel lines. If the sum of interior angles is 180° on both sides of the transversal then the lines will not intersect on any side (condition for intersection being that the sum of interior angles on that side should be less than 180°). So, if two lines never intersect, then they are parallel.

### Access NCERT Solutions for Class 9 Maths Chapter 5 Introduction to Euclid’s Geometry – All Exercises

Below we have provided the links to check solutions of the other exercises of the chapter.