I need some help with my math homework. I am studying chapter 5 Exercise 5.1 of NCERT math class 9. The chapter is about introduction to Euclid’s geometry. I find it difficult to understand some of the concepts and proofs. Can you please provide a video solution and a pdf for this exercise.

NCERT Class 9 mathematics Chapter 5

Page No. 86

Exercise No. 5.1

Question No. 6

Given that: AC = BD

⇒ AC – BC = BD – BC [∵ If equals are subtracted from equals, the remainders are equal]

⇒ AB = CD

AC=BD

AB+BC=BC+CD

AB+BC-BC=CD

AB=CD