CLASS 9 MATHS CHAPTER-7 TRIANGLES
Exercise 7.1 Question 1. In quadrilateral ABCD (See figure). AC = AD and AB bisects A. Show that ABC ABD. What can you say about BC and BD? Solution:Given: In quadrilateral ABCD, AC = AD and AB bisects A. To prove: ABC ABD Proof: In ABC and ABD, AC = AD [Given] BAC = BAD [AB bisects A] AB = AB [Common] ABC ABD [By SAS …