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
AC=BD
AB+BC=BC+CD
AB+BC-BC=CD
AB=CD
Given that: AC = BD
⇒ AC – BC = BD – BC [∵ If equals are subtracted from equals, the remainders are equal]
⇒ AB = CD