4. What are equimultiples?

5. What is the ratio of two commensurable magnitudes?

6. What is meant by the ratio of incommensurable magnitudes?

7. Give an Illustration of the ratio of incommensurables.

8. What are the terms of a ratio called?

9. What is a ratio of greater inequality?

10. What is a ratio of lesser inequality?

11. What is the product of two ratios called? Ans. The ratio compounded of these ratios.

12. What is duplicate ratio?

13. What is Euclid’s definition of duplicate ratio?