Class 9 Chapter 7 Triangles Volume 2 Basic Concepts ASA,AAS Congruence Rule

In this video The basic concepts of chapter Triangles are explained in detail.The proofs of ASA and AAS congruence rule are explained in detail.
And there is detailed solution for example 3
Line-segment AB is parallel to another line-segment CD. O is the mid-point of AD (see Fig. 7.15). Show that (i) ΔAOB≅ΔDOC (ii) O is also the mid-point of BC.

ClassChapterTriangles